Secure Connection failed

I am still using Owncloud Desktop Client on Mac due several issues with NC client. Today I wanted to give NC desktop client another chance but the client already failed to connect to my server claiming the connection would be not secure.

It even could not connect to status.php page.

This is simply not true. Could it be that you still expecting old SSL or TLS 1.0 connections because I’ve turned them explicitly off using only TLS 1.1 and TLS 1.2 on my webserver?

Btw… Owncloud Client still works without problems…