Android App: Creating new WebDAV account got stuck

I just installed the Cryptomator Android Beta 0.7.0 (latest version). Then I wanted to create a new WebDAV account for MagentaCloud. So I typed in the URL, username, and password. But when I hit the ‘Connect’ nothing happens! No error, no changes.

I did it several times, checked URL, username, and password. Unfortunately, to no avail. Hitting the ‘Connect’ button just does not do it.

Anybody has an idea what I could do to get the new WebDAV account? Your help is very much appreciated.