This has happened to me several times in the past week. Things I’ve done that have sometimes worked:
- Click the “Cancel” button if it’s present and not greyed out.
- Open the lid, wait a few seconds, close it again.
- Turn off the Glowforge (leave the app open), count to ten, turn it back on.
- Open up the app in another browser, open up a design, wait for it to load, then close that window and go back to my original browser window.
I’d try them in this order and stop as soon as one of them works. Also, wait a good 30-60 seconds between each of these actions.