Okay, Wifi is definitely not my specialty, but there are a couple of things to check:
Make sure the Wifi is set to 2.4 GHz rather than the 5 GHz that is currently popular…the Glowforge uses the 2.4 Ghz signal.
I’ve also seen folks using their phone as a hotspot to connect, but I’ve never tried it or had to do it. There might be some instructions around here somewhere…