As they already see the issue for sure they will take an action with that and provably they are still in the process of fixing things so we shouldn't rush them up since I believe it's a big work to see if there's other bugs exist.
And I agree if bug bounty will be held for sure it will be a big help since it could help improve more the site.
Bug bounty hunting is not like this

It should be a "bug" and actually affect a lot of things, sure you can get something in return for this but it shouldn't be too much, like maybe 20 bucks for something this simple.
The idea of a bug bounty where casinos pay as much as 1 bitcoin for people who can find it would be the bugs that could affect the casino very badly, like maybe a loophole that allows you to see the results beforehand type of big deal, not something like "max bet doesn't show on mobile" that is just a small design thing and doesn't really change much in the casino part of the deal. I am not saying don't give anything, you could totally give him something but it is not like he figured out there was a way to get everyone's password or anything, it was just a design problem.
Well it depends on the company about the reward system what they can offer and it's not 1 BTC mandatory bounty since anyone can decide on what amount they want to spend if they want to run a campaign like this.
I think there is no need for a big reward in holding a bug bounty as long as the company intends to do this, I am sure Wolf.bet users will continue to help them find the bugs they find because in every gap they must be playing.