It's a bit worrying that they delayed it, i've had it before with websites but usually resolved within a day.... 7 days seems extremely excessive!

Did they ask you to verify or complete KYC during this time at all? Or had you done it before? Because if they asked you to complete during this 7 day period, could potentially have been them trying to get some extra edge by possibly confiscating your balance if you couldn't fulfill it. Dirty tactic used by almost every casino and unfortunately one that cannot be avoided for those who gamble from restricted territories.