I've deployed a ZD1200 (running 18.104.22.168 build 101), and published the Web UI remotely on HTTPS so I can connect to it via the ZD Remote Control App (Android client in my specific case).
I can login from my mobile via the web browser (which proves publishing and IP restrictions are working), but when I try to login via the ZDRC app, I get an error message that says "The request timed out due to either IP changed or invalid IP, Please login again". This returns almost instantly, so a timeout seems unlikely, and the DNS is correct as its the same address I use in the mobile browser that works fine.
Am I missing something? I couldn't find any documentation relating to setup requirements for the ZDRC app, so assume there's nothing special required.
Does the app support a hostname for the ZD or does it have to connect via IP only?