Binance is giving me a problem now. I did get the very small amount of bitcoin into the app, like $1.40 worth and I bought 1 ripple coin with like 38 cents left in bitcoin. Since I don't plan on using binance anymore I figured I may as well just send that 38 cents back to GDAX but when I clicked the withdraw button a message just popped up where they say they strongly recommend I enable F2A or whatever that's call. I would, but like I said I don't want to use Binance anymore so why aren't they letting me withdraw my bitcoin?