A negative balance can happen when a sports bet is graded in error, and the winnings are used before the correction is made.
How this happens
In rare cases, a bet may be settled incorrectly. For example, a losing bet is mistakenly graded as a win.
If you use those winnings and the result is later corrected to a loss, the winnings are removed from your balance. This can cause your account balance to go negative.
What to do next
Reach out to customer support—we’ll see what we can do for you.