Hi
My 2-year-old top push buttton toilet cistern has decided to stop filling. Now, before I can even assess the problem I have to be able to look inside it, however I just can't get the lid off, I've tried lifting and attempting to prise up the button seating but apart from being able to twist the lid slightly from side to side I just can't get it off and am reluctant to heave too hard although that may be the answer. Any advice would be appreciated, thank you.