You’ll get a flashing pinkish light in the tube if the light in the rest of your room is low enough - but there’s no way your tube has worn down unless you’ve literally been actively printing 24 hours a day since the day you got it (tubes have failed (cracked/broken connections/etc), but none of them have worn out yet)
That being said, it’s not power since the head moves, so I think you’re going to need to wait for a staffer to look at the logs and see what’s up.
Add the time you tried the GoGM into your post so they can focus in on exactly the possible problem area in your logs on a design there aren’t any variables for!
You might also post a screen shot of the entire GFUI with the GoGM - from the name of your laser on the right all the way to the selected draftboard on the left.
Oh - and try this as well - ignore the title of the post, if your cable is loose it can cause the not-cutting: