I have 2. One on my home server and one on a VPS. The issue is not with connecting, which could possibly depend on the server. It’s with loading the configuration, which is 100% the iOs app <-> MT300N.
I can load both configurations without any problem with cut/paste on my iPad connected to the MT300N. It’s only via the app that nothing works, QR code or cut/paste.
Cheers.
Cheers.