I don't support game-protect.com, but what I agree with them is that Curacao "license" is just a piece of toilet paper. It doesn't guarantee anything to the players as Curacao jurisdiction does not participate as a mediator in disputes between gamblers and operators. This piece of paper is not accepted by developed countries. Some casinos use it because they want to pretend that they are legit and the cheapest way to do that is to buy the Curacao "license".
You obviously feel you have been mistreated therefore I sympathise with you but I would like to see what game-protect has to say about this before coming to a conclusion.
It is common knowledge that most websites operating with a Curaçao licence are those that wish to have their owners maximise anonymity and also have a seal to display on their website to show they have a casino licence. That might have an effect on newbies and gullible people which gives peace of mind when betting but to a seasoned individual we know that any licence from Curaçao is a useless, meaningless token to display.
I have no idea why game-protect selects some websites as genuine and others as scams - I look forward to his reply to try to understand what is going on from his side.