Join Date: Sep 2002
Posts: 11,886
Don't do this. Make sure you have a wallet under your complete control -- Exodus is a good wallet manager for this -- and withdraw from the site to your wallet. Then transfer the coin from your wallet to CashApp (or whatever exchange you are using).
Essentially all exchanges and cryptocoin processors will disable US users' accounts if they recognize that you are transferring directly from an online gambling site to your wallet on the processor.
And yes, if you are a US resident and are doing any sort of online financial transaction, including buying/selling cryptocoins, you will have to jump through some know-your-customer hoops.