If there's a wagering requirement for the referral bonus to be claimed, why would they lock your account? ~
Where is the abuse part?
There is nothing to abuse with the referral bonus fund. The 100 USD is an extra bonus fund beside the normal affiliate commission. You won't receive the amount in your account if anyone join bc.game through your affiliate link. The amount will be credited to your account if the referral increase their VIP level by doing wagers. Check the pay table of
USD Rewards RuleCheck the screenshot of bc.game
email support. They said

It clearly indicates that bc.game has suspended his account as they found multiple accounts under his control. And in the telegram support message they said OP is using his account for claiming the bonuses only. They have also given the reference of the email message (multiple accounts). In the ‘Bonuses and Promotions’ part of
User Agreement page, bc.game said
5.6. Bonuses can only be received once per person/account, family, household, address, e-mail address, IP addresses and environments where computers are shared (university, fraternity, school, public library, workplace, etc.). The Operator reserves the right to close your account and confiscate any existing funds if evidence of abuse/fraud is found.