Merged your posts and moved to a new thread as it was unrelated to the thread you posted in as your issue is not with teh new TLS provider, but likely a lack of libcurl.
You’ll need to enable ((trace logging)), restart Sonarr and look for: Curl not available, using default WebClient.
If that is present, it confirms that Sonarr cannot fallback to libcurl and you’ll need to fix that, which would be similar to what is outlined here: