If your house edge is 0%, how do you make money with your service? I doubt you are a welfare office.
This has been thoroughly discussed many times before. 0% house edge is just a probabilistic figure and a gambling game can run well with 0% house edge. In fact, this game is running without any issue for almost a year now. For details, go through the detailed discussion in this thread -
Which gambling sites have 0% house edge?