Fulcrum connected to a Wallet on Windows over ssl

Hello,
I created an SSL certificate and key on Umbrel and successfully imported the certificat into Windows. I also specified the certificate path in the Fulcrum settings on Umbrel. However, despite these steps, the SSL connection still fails to establish between a wallet on windows and fulcrum on umbrel.

When I enter umbrel.local:50002:t (without SSL) in the wallet configuration, the connection works fine, but when I use umbrel.local:50002:s (with SSL), the connection does not work.

Does anyone have solution ideas or an easier way to enable SSL on Umbrel with Fulcrum?

Thanks for your ideas!