Is it possible to have a verification you want to spend dinobucks? Either touching two different spots on screen at the same time (or even clicking one of the physical buttons on the device).
I had over 6000 dinobucks waiting for a coin sale. One day I opened the game and I had less than 2000. I don’t know exactly when it happened but the only thing I can figure is it was accidental pocket purchase(s). It takes a while to save these up and it’s disappointing to lose them this way.
I’ve had other times where I’ve found myself on the screen one button press away from making a real money purchase. That one I’m protected from pocket purchases as I don’t have a payment method set up and would have to take further steps to actually make a purchase.