Hi mate gamban is and always has been like a nicorete patch you got to want it to stop you before it will actually work.
In your case though it sounds like you didn’t lose complete control previously and want some flexibility so that you could disable it if you did want say a cheeky footy bet etc.
In regards to this casino you joined each site properly needs to be added to gambans app or von for it to be blocked so with new casinos popping up this may have been how it snuck through * hypothetical maybe incorrect btw I don’t work for gamban so don’t have hard facts sry ?
If you are looking for a more solid solution maybe registering gamstop would be better suited and as far as I’m aware is much harder to manipulate as long as you answer all the fields on application honestly.
I hope this helps mate ??