i used to do the whole crypto networjk, and a lot of people still say you should, however the reqs nowadays are a lot more stringent and i think the ev between a couple of hours at the poker table or casino whoring on reloads is close now.
Dont get me wrong, if you wanna do em them go ahead, they build the roll nicely, they just arent as quick as they used to be.

have you tried coral/eurobet (two sites) I think BJ may still be ok (definitly check the t+C's first)