Hi 5,
I use Google Play to subscribe, but I don't use the auto renewal. You can buy a Google Play card at many stores. Then redeem the card with your Google Play account. This gives you a balance of cash in your account. In Dogfight press the shopping cart icon and select the $1.99 for 1 month button. Google Play may ask for your password and the money will come out of your account balance. You will be good to go till next month when you get the Random Play setting again. I don't think Google Play will allow the auto renewal selection, so I just do it this way. Works fine.