Allow specifying the port of the Nextcloud server
I am running a Nextcloud instance in my local network. It is a rootless podman container that runs on a Raspberry Pi. Because it is rootless, I wanted to use port 8443 instead of the default 433 (privileged port), but I always got an error when trying to log in with Gnome Online Accounts. My suggestion would be that if you want to specify a port, you can just enter the IP address and the port in the "Server" field (e.g 192.168.178.19:8443). No need to complicate the UI.
The error message could also be improved. It did not mention that you have to use SSL or that currently port 443 had to be used.
Thank you for your work