I made a thread in alt discussion asking the same. I feel like i have about 1000% the balance i should. i should have less then 1 btc yet it says i have 12.98 atm. It adjusts by little bits and since my balance was at 1.3 at its peak i thought a decimal error was putting it to 13 but that wouldn't explain your balance. this is wierd

EDIT: Someone posted in my thread mentioning the pennies estimate being off. I searched and found another person who had the same issue. Do you hold any pennies? I'm holding around 2.5bil