[Users] onionmail error - couldn't start STARTTLS session

[madag nx]

Hello.

Sending email from onionmail - info account interrupts with error [**
couldn't start STARTTLS session
]. I tried different servers with same result.
tor box and mail 2 tor sending works fine, but not onionmail.

Does onionmail requires additional steps, or did I misconfigured it?
I removed screenshots of settings because I don't see my previous mail
in mailing list, also changed names of sites.
Thanks for any hint.

Best regards!