Maybe what triggered them to block your account and ask for KYC verification was the roll-over times and the immediate withdrawal. It all appears as through you had just deposited, used very small odds to meet the roll-over requirements which is OK because it's a player's choice but to them, they may look at it another way

Meanwhile, after your last message to them, did you receive any response yet about the verification? If no, maybe they are still carrying out an investigation before unlocking your account. It might require so more time.