This is an issue I ran into yesterday. It turns out the timer bypass and timer start button are in the exact same spot (srry no screenshots). Now the problem I had was that I lagged just as I went to start the timer. After a few seconds nothing happened. So I went to tap start again. Just as I did, it changed to bypass.

The problem is there was no confirmation request, so immediately 5 plat was deducted and I was able to collect the huge 1000 coin bonus.

Anyway, just thought a good idea would be to have a confirmation popup whenever you are going to spend platinum.