Dosent exist strategy to win since there is a minimum and maximum limit bet.
Martingale will work without those limits!
Even if the house doesn't care about its bankroll management, there will still always be a max limit for you, ie. min(your bankroll, house bankroll).
And even with a very low min limit (when you bet with a cheap altcoin) and a very high max limit (when both you and that site have a huge bankroll), martingale is still not going to help you beat the house in the long term when the game is -EV.