The toilet doesn't stop filling up even if the water tank is full and keeps on overflowing the overflow pipe.
We've opened the toilet and the cistern looks like this. It's different from the ones I've seen on Youtube.
We've tried to adjust the height of the floating part by turning the screw clockwise and anti-clockwise. However, this did not help.
We've also tried to manually push the floating part up and down and this doesn't seem to block the water flow either.
Does anybody know how to fix this or what to test out next?
Thanks!