After a similar verification, I expected information for about three weeks. Yesterday sportsbet.io froze my balance with 5.5 btc with the same wording.

"...
Unfortunately as your withdraw amount exceeds your deposit sum no further funds will be released.
..."

I made a lot of bets (mostly on top basketball championships in live), I won a lot and there were no problems. My account was blocked after within one hour I requested about 10 withdrawals in a row.