Deposit with Bank/Crypto is always never a problem.
It can be a problem if a stolen credit card is used or another way of unauthorized use of someone else's bank account.
The problem is while your source of fund being made to platform have unusual activity, every platform/casino (not only BK8) will ask you to do KYC. Plus, If you tried to fake it mostly you will get banned (not only in here, but on every platform like Exchange, Casino and other financial platform).
It is possible to buy someone's personal data for KYC verification for a small amount of money. Here is an example
https://bitcointalk.org/index.php?topic=5506738.0I assume that the problem arose in the difference between the documents of the person submitted for KYC and the data of the person from whose bank account the deposit was made.
note to @ryzaadit, no need to repeat the BK8.Official post, we can all see it.
