Did you happen to change the workspace size in LightBurn by chance?
Same question for your firmware settings, any changes made there recently?
For your license issue…
If you still have access to the old computer, you can deactivate it like so: How do I move my license to a new computer?
Otherwise, you can use the license portal to manage your license activations, as explained here: How to access the license portal to manage your own activations
If you have any issues, please let us know.