Marc

You are not allowing login for front end or the admin CP. If you click the pencil icon, you will see this
 

People have manually added links there. You would need redirects from your old domain in order to correct that

You would need to contact your email provider on this issue. If the mail provider neither accepted the message nor provided an error, there is only them who can assist you

It means users can write a review (feedback) on files they have downloaded. 

It actually depends. If they are indeed separate items (posted individually) then of course they would be treated differently. If it's a topic posted from pages, then it actually posts a snippet on the topic to the full pages entry. In that respect its really no different to having a snippet and a link on any other page.
Its worth noting, you should really test this on your trial. Our news pages are really quite customised here, so you may be looking at an example that isnt really representative

There is no facility that would allow you to do this, no. You could potentially do topics, which would then delete the attachments with it, but thats the only method built in. The system won't allow items to be deleted that is attached to an item of content.

I have created a ticket on this for you. I understand you cannot receive those on your current email address. Do you have another email you can add as an alternative contact on your account? If so, can you please do that and then send me a PM with that email address. I will then copy you in on the ticket

It means that at some point you had pop3 incoming mail set up on commerce, in Commerce>Support

You would need to contact the author of that application. Classifieds is a 3rd party application

I would advise first of all checking on a default unaltered theme. If that is working, then you have a modification to your theme that is causing this issue. If its st ill not working on an unaltered theme, check for any plugins or applications 

It's the number of links that have been clicked through from emails. Im not sure what relevance there would be as to how many links there are in an email. If there are 2 (for example) and they click into both, there would be 2 email clicks

If you have uninstalled it at some point, it would delete freom the directory. You would need to upload a fresh set of files from your client area, and you should then see it available to install again

Hope you manage to find what is causing the issue. Im also unable to replicate that on this end 

Please ensure you are updated to the latest release, you are using default email templates, and that you have no 3rd party items enabled, then test this again. I am unable to replicate this on my end. I actually shows a anonymous guest posting when I test

Likely not, as we use a lot of our own functions

Thank you for bringing this issue to our attention! I can confirm this should be further reviewed and I have logged an internal bug report for our development team to investigate and address as necessary, in a future maintenance release.
 

I believe what you are likely wanted here is guests not to see anything, just based on what I can see there. if so, you would go to the guests group, and switch "Can access site" off. They would then only see the login

There isnt a function for this at present unfortunately, no. Do feel free to post up a suggestion within our feedback area

If you add as UTC there, is this not working for you?

Why would you want to get rid of them? Is there some issue being caused on your site due to these? I ask as what you are describing is perfectly normal

An open club should indeed show throughout the community. Are you having issues with that? Are you running the latest release?

At present it follows the permissions of the database, so you would have to set it there within the admin CP if you want to set specific permissions 

Alternatively, you can add an alternative contact within your client area, with a different email, and contact us using this

Please check the support area of your admin CP and ensure you arent awaiting any patches, as this looks to be one of the items we patched