This is the fucking shit around the gambling world always. No one read the terms and conditions, even though readers don't attempt to complete KYC before happened a problem. However this isn't new for gambling sites, they often reject and banned accounts. .
I think the KYC thing is not the main problem here, OP did follow that requirement and send those info afterwards.
The case here is being blocked
(cannot login), plus having no positive respond to the their customer support, it's been a whole week already afterall.