If you do not know how to make the customization which you want to have on your theme, you would need to hire a third party provider to do it.
You would create the new profile fields in ACP -> Members -> Profiles. If you do not want them to fill out birthday or signature, you would simply remove that from the completion profile process.
I may not be understanding you here. However, it is the point to not show the solution count when in a normal discussion forum without the ability for solved to show.
Almalinux is an Operating System (OS). Our software does not directly run at the OS level, it runs on Apache, PHP, and MySQL. Therefore, so long as Alamalinux supports compatible versions of Apache, PHP, and MySQL, you're fine.
Unfortunately, I am not seeing any issues when attempting to login. Are the individuals which are encountering this having an IP address ban in ACP -> Members -> Ban Filters?
Do you have a copy of the message they are receiving? I am not seeing anything specific related to that user in your ban settings or should be causing a block.
Seeing some outdated files here. Could you please go to your Client Area and download a full set of files and then upload the contents of the "ips_****" folder to your server, overwriting what this.
There is not a way to specifically limit videos. You would need to limit all attachments uploaded to accomplish what you want here. This can be done on a per content basis per member group in the ACP -> Members -> Groups
Looks like the first guide you found is out of date. I will change that location as the other information is still valid.
The referral system got merged under ACP -> Members -> Member Settings -> Referrals.
We would need to look further into this for you, however the access details on file appear to be incorrect or missing. Could you please update these details by visiting your client area, selecting the relevant purchase, then clicking "Review/Update Access Information" under the "Stored Access Information" section.
We look forward to further assisting you.
I'm afraid, we are verifying what your server is reporting from PHP against an online source and it is off. As mentioned, even if it is off by a few seconds this warning will appear as it can cause issues.
Server configuration is beyond our scope of support so if you continue to have issues, you will want to contact your hosting provider or hire a server administrator if you do not have a managed hosting provider.