I never used CoinRoyale website so far, I don't think they are active in Bitcointalk forum, and I can't find if they have any betting license, if that is the case don't be surprised that something like this happened.
You should read terms on their website and if they have some rule that can terminate your acount for being dormant for years than there is nothing you can do about it, and there is nobody to complain about your problem.
This is their active thread on
Bitcointalk. They are one among the oldest gambling platform, and the lack of promotion has made it unknown to most of the gamblers and the bitcointalk community members. As you've said different sites follow different procedures, and this being an oldest one sticking to a stepped process whereas the late launched platforms does it with ease on a single request.