on top of you violating their Terms and Conditions about having multiple accounts not being allowed(doesn't matter if it is inactive).
I dont know, but here are official instructions, article "How to delete your BC.Game account"
https://bc-game-review.com/how-to-delete-account/And here in paragraph "5 reasons not to delete your account" is written:
"Difficulty in account recovery. Recovering a deleted account and all the details attached to it may be almost impossible. If you wish to come back to the site at a later time, you may have to start all over again without having any previous standing, funds, or VIP account. ... with a link to article (instructions) "How to sign up on BC.Game"
So with my common sense is possible to permanent selfexcluded from one account and later sign up new account :/