I've read the conversation you've had with their support and I am still a little confused. when they say "up to 50% of the house edge" does that mean that the daily bonus will be calculated based on the house edge of the game you played? if that is so, does that mean if the house edge of the game you played is 1% you have a chance for your daily bonus to be calculated up to 50% of that house edge which is 0.5% at the highest and It can go lower from that since they say "up to" and not a guaranteed 50% of the house edge?
This is correct interpretation but the tricky part is the word “up to” which probably based on the VIP level of an account to increase the rakeback percentage to that level since 50% rakeback is too huge to be given as based percentage for every account.
His current rakeback percentage is around 4% to 5% which is equivalent to average VIP rakeback percentage. I’m not how Rollbit daily bonus work but I think the VIP level play an important role to get the maximum percentage.