asking your ID wasn't assured you of them paying you back , they asked for your Identification for formality and legitimacy of your KYC but the Issue of  Multiple account is still there and need to be engaged and settled .
Indeed that you did not intend to cheat or to do anything bad against the site but Rules are rules mate and that is another Issue aside from your ID sending.
and it is clear that you Knew about House rules because you are a literal gambler because depositing 800$ at once is a proof that you mean to gamble.
so having all this why still create new account and did not try to contact the support or email the team first if it's ok to create new account ? you Know this is coming mate yet you still did managed to gamble, so Expect no assurance of getting your fund .