Looking at some of the messages you have had with winz, I think this is a simple matter to handle!
Whatever is available on your account let them allow you to withdraw and thereafter inform you that the account will no longer be accessible as they will no longer be providing a service to your country and not how it has been done, hope their forum representative gets this resolved ASAP.
you seem to be a threat to them you only deposited less than $100 worth of ETH and you have made it to $500, that is 5x you could be draining all their funds in no time if they still allow you to play.
5X being a return on capital is a good investment, but I don't think they would limit a player this easily as in the long term a player could play with emotions and end up getting on a losing run, and before you know it you are chasing your losses..unless Winz is considered a small gambling platform to target such small amounts

i'd like to copy bet.
Waiting for the secret recipe as well