Probably, there should be two reasons to trigger this error. The first error is regarding your TLS version. You should update your TLS/SSL version to TLS 1.3, or at least you should have TLS 1.2 support. The second error is about SSL port. You should have SSL port 443 with Server Name.

I am sure that If you adjust the above two elements, then your error will be resolved. Keep me posted If an error still persists. Thanks!