Nope, from what I said, there is always profit on every gambling site, more over if they have this huge traffic as you have right here. From so many similar wagering contest you should gain good profit to share for every winners here. 50% is really a good deal to have and that is why you wagering contest always succeed because of this extra prizepool. Many sites will be jealous on this kindness
It is just matter of time when you are going to gai back from your loss( if only there is a little bit loss )

The house edge used to be 0.5% as far as I can remember so giving people 50% of the house edge in a prize pool for one currency is literally like saying (we're temporarily going to how things used to be for this coin and making it into a competition to get more people betting with that currency). I think the site started by offering a zero percent house edge too but I might be wrong there...
Are you confusing it with other site? If I remember it well last time when there is an event, some site offer 0% house edge but of course it has some time limit and until this day, I never met any site offering those thing again
Anyway I just wondering if he have complete all the level here, are we able to get the full of the full rakeback or is it only some part of it?