Why can't I use Git with credentials?

On this page Managing Projects with GIT is written that it shoud be possible to use credentials if someone wants to use Git.
But as you see in this screenshot, I have no option to use https. Whats wrong? I’m using Studion 2019.10.3!
Do we miss something in the configuration? We don’t want to use SSH!

As you see in this screeshot there is no checkbox “use credentials” or a link in the upper right corner to “use https”.
Any suggestions?