sofos

There is an app for that. https://invisioncommunity.com/files/file/9551-gt-members-group-enhancements/
 

I think this illustrates the difference between "User Group" and "Permission Group".
It may not be a bad idea to separate the two since their usage are quite different:
User group symbolize affiliation Permission Group symbolize rights (and responsibilities) Until then @sofos, maybe a custom field would suffice unless you want to manage many user groups with the same permissions?

How would this group differ from the existing member group? Special permissions, access to certain areas? Will it cost money to join this group?
If you want to simply open up an area for these users to discuss and be a part of a sub-group of your community. Our Clubs feature is a perfect fit for this. You can see a basic overview of our Clubs feature here. Also, can see it in action here on our community here. To activate Clubs, you would simply go to ACP -> Community -> Clubs -> Enable (if you haven't already). Then ensure your member groups have permission to access them.

Only if you wanted to host the pdf there.
I said to use Pages.

A Pages database, with a "title" & "description" field, along with a file upload field.
I'd also suggest using categories too.

@Miss_B I prefer not to put my hand directly on the database 🙉
If there is anyone interested in making the plugin we can talk about it.

You can change the number of views per blog by changing the revelant views field for said blog in the database. Or you can request a custom plugin that will do that.

Change it to this:
.cMultiQuote { display: none !important; }  

.cMultiQuote { display: none; }  

This should hide it without hiding the whole bar.
[data-action='quoteComment'] { display: none; }  

This code will hide absolutely the entire toolbar in the post, and a person needs to cut out one button.
It is better to cut the code of the "Quote" button from the template of the post on the forum:
<li data-ipsQuote-editor='{$editorName}' data-ipsQuote-target='#comment-{$comment->$idField}' class='ipsJS_show'> <a href='#' data-action='quoteComment' data-ipsQuote-singleQuote>{lang="quote"}</a> </li>  

I would suggest double checking that the theme templates have not been modified, if you're using a copy of the default them. If you're using a theme from the marketplace, etc... it may  be out of date so checking that or speaking with the author may assist.
To check if the templates have been modified, can go to Themes and uncheck "Unmodified" in the filter option, as seen below:

@Rikki @Ehren
Safari 10 and 11 apparently have an issue with the use of rgb() / rgba() in combination with --css-variables within certain CSS properties like border and box-shadow. I found one specific bug in your default theme that you can fix, other than that I just want to make you aware of this, as I had to spend quite a lot of time debugging this myself. 
After an upgrade from 4.4 I got a number of complaints about how there was now a grey circle covering the reaction button and the number of likes. People reported having the issue on desktop, mobile and tablet. Initially I was unable to reproduce and started to ask for more details. One of the users provided me with a user agent string which led me to reproduce the issue and discovering another one.
This image displays two of the issues I found in our theme:

 
This image displays how it looked in Safari 9(!), Safari 12+ and other browsers:

How to reproduce issue 1 on a community: 
You need to be logged in with a member account that's able to give reactions, and: 
The reaction setup: In my case only the standard like-reaction is enabled, all other reactions disabled. We use the upvote-image for the like-reaction. Reaction display is set to Overall reaction value.
Reproduced with: Browserstack -> Mac -> High Sierra -> Safari 11.1 (or other environments with Safari 10 or 11)
Please note: only issue 1 can be reproduced in the default theme, but I'm also mentioning my second issue just to provide an additional example. 
Cause/solution for Issue 1 / Bug in default theme) Grey circle covering like button and reaction value
This is caused by the following CSS rule in applications/core/dev/css/global/framework/engagement.css
a.ipsReact_reaction:after { position: absolute; top: 50%; width: 70px; height: 70px; border-radius: 50%; content: ''; display: block; opacity: 1; pointer-events: none; box-shadow: inset 0 0 0 35px rgba( var(--theme-text_color), 0 ); } More specifically the issue is with the box-shadow line at the bottom. Unless I'm missing something, this rule is the equivalent of:
box-shadow: inset 0 0 0 35px transparent;
Changing the value of box-shadow to "inset 0 0 0 35px transparent" at least fixes the issue. But I guess this might affect the animation styles you have further below in the same stylesheet. I don't know what a better solution would be, but I at least think you should make sure that the reaction button and reaction value are available in Safari 10 and 11, which they are not currently. 
Cause/solution for Issue 2) Black color instead of lighter border color around posts
So the second issue was caused by custom CSS from me, but I'm including it since it highlights the rgb/rgba problem with another CSS property as well. 
My CSS-rule was: 
article.ipsComment { border: 1px solid rgb(var(--theme-ehm_grey2)); border-radius: 10px; } The solution here was to instead use border-style and border-width and then add:
border-color: rgb(var(--theme-ehm_grey2));
So rgb() + --css-var worked within the value of the border-color property, but not within the border property.
Note that if you do not use a variable within rgb for the border-property, then it would also use the correct color: border: 1px solid rgb(235,235,235); 
Meaning it's the combination of rgb/rgba-function and --css-variables that is causing the issue. Not the rgb-function on it's own
In summary / other findings / questions:
1) Safari 10 and 11 apparently have an issue with the use of rgb() / rgba() in combination with --css-variables within certain properties. In most cases it probably doesn't cause too much trouble, but I think you should at least fix the reaction styling issue and also just be aware of this issue. 
2) I personally found it very weird this issue is not in Safari 9. It seems it worked as it should Safari 9, then they broke it for Safari 10&11, before it was fixed again for Safari 12 and newer. Unless you have some kind of compatibility CSS rules or javascript that kicks in for Safari 9 but not 10/11?
3) I did a quick search on google about this and found a note about this from 2018 in another software project: https://github.com/ionic-team/ionic-framework/issues/16123
They gave an alternate way to debug and solve this (which I haven't tested myself): 
 

Add this to your custom CSS file:
.cPost .ipsComment_controls { display: none; } That should do what you want 🙂
 

In either case, create a support request in the client area. If you are a Community in the Cloud customer, then IPS will get you sorted. Otherwise, you may need to work with your hosting provider to determine how to allocate more resources during peak usage times.

Do you have your own VPS/Dedicated Box or are you on a shared hosting plan? If the latter, you will have to ask your host about it.

There is no built in option to do this, no.

Hey Abobader!
It should be able to migrate all of your tags and prefixes over from Advanced Tags and Prefixes without issue in most situations, but there are a few quirks sometimes that can cause issues which I will add checks for to prevent in the next release.
If you'd like, I can perform this upgrade process for you so you won't have to worry about anything. Just send me a private message when you're ready to upgrade and I'll get you taken care of.

If you can use MySQL 8 feel free to upgrade right to it. I use it locally with 4.5 and it is fully supported as of 4.5.

About This File
This resource uses Google Books API to grab data from any book to your site, as long the data is available on Google Books. This resource supports both 10 and 13 digit ISBN format.
All you have to do is type the ISBN, the API will add for you*:
Title Subtitle (if there's any) Description Author Publisher Year of Publication Number of pages And most important: it will upload the book cover automatically for you (*) Data will be retrieved if the book is found in Google Books.
 
 

You're right, it's just a pandemic came along and blocked our world for two months.
 
you can change color using some CSS rules on your custom.css file.
No, this is not possible ATM.
This has to be considered a bug. I'm about to release an update, see if I can fix this too.

What's New in Version 4.2.0:
Hide topics and posts from banned forums in Profile ->Activity -> Topics and Posts tabs. New setting to remove from board index the banned forums

you can't
There is a big thing missing on Classified apps :
1) the possibility to filter the results : by price, by brand etc
2) A real search box with multiple criterias like you can see on various marketplaces :
i want to see the adverts with price less than $100, belonging to a category in particular etc
This is the major improvement we need for Classifieds
PLEASE LIKE THIS POST IF YOU SUPPORT THIS REQUEST !

click also on icon on the right to set new expire date.

I'm adding on top of this plugin so I thought a topic for it would be nice for some testing and feedback.
Added an option to block the _ga cookie by Google Analytics until the consent message is dismissed.
I've been testing this, and while the analytics.js file will still be loaded, no tracking information is sent to Google.
After enabling the option in the ACP, delete your existing _ga cookie before testing.