LR4 saying drawer is full when it isn’t. Help?

We have a LR4 that we’ve had since June. All was going well with it until about 3 days ago, where it is suddenly saying the drawer is full when it isn’t. Initially it would cycle a few times before saying it’s full, now it says it’s full even after I just emptied it. We’ve tried to press the reset button, unplug & plug it back in again, and I have confirmed that it there are no updates needed per the app. Any other ideas?