Welcome to the forum,
The truth is the site is good, as soon as I registered they gave me 100 credits, but when I started to try the slot game I hit Play and it stays like an infinite cycle, it does not give the result, I changed the browser to see if that was it, The same thing happened to me, in fact my internet connection is good, I couldn't blame the internet, so I think it may be a small bug, I didn't keep trying more games because I assume it's a problem, anyway I notify you to see if it has An error in the platform or it could be that the maintenance of the platform lacks a little or maybe my location the games do not work? They do not have restrictions by prohibited countries or do they?
OP said that he had removed the sign up free coins bonus, but you still receive the 100 credits after sign up?
It can be another bug of the script, just another proof that the script is not working really well.
I tried to check the leaderboard, but there is nothing shown (seems to be stuck on loading).
So curious to see the leaderboard because other sites with the same script shows something too good to be true in the leaderboard.