Hidden Quest

There's a 100 gem ad quest and a "Pay Now" quest. It's a plus that the hidden quest can be completed just by watching the ads that play automatically, even if you don't actively click on them. However, a downside is that ads play way too often. Most of them are AliExpress ads, and if you leave your phone on, it'll automatically switch to the app or the Play Store, interrupting the time quest timer. So, I don't recommend it, but if you really want to do the time quest, I suggest not pressing the 'X' button on the ad screen and just leaving it as is. That seems to minimize ad interruptions the most.