Marc

You would need to message our accounts department for this. I can create a ticket for you however

Both are shown on the same page, with on agree button at the bottom

You would go to to Customisation>Appearance>Icons and Logos, then fill in all the details there. Once you have done this, push would be enabled

You have switched to https using the server, but not actually changed the software to use it. You need to follow the instructions in the following location
https://invisioncommunity.com/4guides/advanced-options/configuration-options/using-ssl-https-r273/

This is indeed intentional due to the way in which those links are created on quoting.

That looks to be a guest block. If so, please open the block manager using the tab on the left and you will see an edit button for the guest block

As mentioned above, you would need to create a constants.php file. You would create this in the root of your community installation, and add the following
<?php define('DISABLE_MFA',TRUE); Remember to remove this line once you have got in there and reset anything you need

I have deleted that item for you. The delete option was further down the list

This is an issue on the custom theme you are using there. You would need to contact the author of that theme to correct the issue there.

A ticket has now been created for you on this, and someone will be in contact as soon as possible

If a member is banned, all they will see is the banned message

I have spoken to my colleague here, and the reason for this is that this change was intentional. As mentioned, you would need to add a sub to those users if you wish to enforce purchase of items. This does not affect anything on old accounts, which is why you are seeing some differently

Is there is an issue with tmp, you will need to contact your hosting company to resolve this. That will certainly be what us causing your upload issues

I would ask yourself why you are switching it on. Switching on that setting 'can' save processing time and memory usage. It doesn't necessarily mean it will. Some servers are good with that switched on, and others it can cause issues with. So it will depend on your server also.
I wouldn't advise looking at advanced configuration with a few to changing settings. In general, if something is set as defaulted to the off position, there is usually good reason for this. If you are unsure on what the setting does, and its in that section, you probably shouldnt touch that.

If that is already selected and you have no cron job set up on your server, then this is why your tasks arent running. You would need to either switch it to run with traffic, or set up the cron job on your server. The latter would be the better of the 2

You do not control your DNS as your Domain nameservers are pointed to us. If you would like a text entry added, you would need to create a ticket in your client area to request any additions you need are made

There is no specific functionality for this within the platform at present. It may be worth taking a look at zapier to see if there is freshdesk integration there. If so, you may be able to create this functionality using zapier. You can read more about zapier setup here
https://invisioncommunity.com/4guides/community-enhancements/zapier-r360/

It looks like when you downloaded, you didnt so select to include the converters. You need to ensure you have, as you havent got the latest files for that application

You can choose to disallow registation from set email domains by using ban settings. Go to Members>Member Settings>Ban settings, and set them up there. 
For example, if you want to block everything from gmail you would add *.gmail.com 

There is no way in which to downgrade the software. The only way in which to do that would be to restore your site to the backup taken before you did the upgrade

There are a few things that google apis may be used for. Things like maps, ip lookup and many other things. Google is also contacted for other things such as fonts. You can't switch all of these off. You would need to correct the issue with your hosting company

It is very much likely to be what Sonya mentioned above. You would need to use different images, or change your theme to suit

I have created a ticket on your behalf, and we can get that sorted out for you. I will be in contact shortly

That has now been resolved for you. Noticed you were also having cache issues on the front end and showing CSS, so have resolved that for you while I was there.

Clubs comes with core. However you only get the ability to add items on those clubs related to the applications you have purchased. For example, if you dont have forums, you cant add a forum to a club