I just installed the macOS app and I can see that connection via Bluetooth is possible.
Is it also possible to connect to my T-Beam over WiFi by entering an IP address? I do this on the Android app, is it also possible on the macOS app?
Nope, just bluetooth.
Would it require a lot of effort to add that option to the macOS app as well?
Pretty big re-write for a pretty small group of users, really not even possible now.