RustDesk Server Pro (Windows) on Server versions below Windows Server 2022 - TLS_1.2 Problem?

After a long period of troubleshooting, testing, wiresharking and swearing, it looks like that its currently just a waste of time if you running RestDesk Server Pro (Windows) on a infrastructure that is using Windows Server versions below 2022 because Windows Server 2022 is the first system that has the ability to use TLS_1.3.

-> SMTP currently doesn't seem to work below TLS_1.3 (only a problem if target does not have TLS_1.3)
https://github.com/rustdesk/rustdesk-server-pro/issues/99#issuecomment-1777223013

-> Secured LDAP currently doesn't seem to work below TLS_1.3 (This could be a problem if your Active Directory Server is not a Windows Server 2022)
https://github.com/rustdesk/rustdesk-server-pro/issues/188

-> API doesn't seem to work - No automatic username, devicename, deviceinfo and no strategies are beeing applied (If your secured API Server is powered by a reverse proxy on a server older then 2022)
https://github.com/rustdesk/rustdesk-server-pro/issues/19#issuecomment-1889166892

Just to make sure: I fully agree that TLS_1.3 ist the best way to go. You know that, i know that... and Microsoft know that too. That's because they want you to buy Windows Server 2022. But TLS_1.2 is still maintained and used by all other Windows Server systems below 2022.
If that's the case that TLS_1.2 is the problem, there should be an information at the (Windows) documentation

Review the linked issues 99, 188, and 19 alongside the Windows Server TLS documentation to determine whether the reported SMTP, secured LDAP, and API failures are TLS 1.2 compatibility problems. Done means confirming the affected server versions and documenting the limitation or required configuration in the Windows documentation.