My basement saniflo toilet is shaking pretty significantly when flushed for the past week or so. I have stopped using it until I figure our what the issue is. It about a year old and has never had problems. Any suggestions? I'm hesitant to try and open it to see what the issue is since I didn't install it and am not that familiar with it's workings.

Home - Saniflo - 002/005/007 Saniplus Toilet with Macerator Series Pump in...