Okay, just to clarify…you had it set up correctly and working a few days ago, right?
Once you set it up and have it connected, you don’t have to run through the setup again…it should stay connected through your Network. All you should need to do from that point is turn on the machine, wait until it finishes the startup calibration, and then open the app to do your projects.
Glad to see Jules got you sorted! Jules is correct - once you’ve completed Wi-Fi setup, you shouldn’t need to do that again unless something about your network changes. If you see the “Offline” message in the app, usually restarting all devices involved (Glowforge, PC/tablet/phone, router, modem) gets you back in action.
I’m going to close this thread since you’re back up and running - happy printing!