But I do hope there is a better way to prove that they changed their terms after you made your deposit, accepted the rules, and started wagering your bonus.
I believe that most of the gambler doesn't take a screenshot of the terms, or keep an archive version of the website before taking the bonus. Because casino doesn't change the terms of the bonuses in this way. So, the chance is very low to see a better evidence in this type of complain. There is a possibility that OP has manipulated the screenshot. But I believe that 'khaled0111' didn't make any mistake to check the wagering requirement in the last month
I'm a bit confused here because I just finished reading their bonus terms and it says the wagering requirement for the deposit bonus is 50x not 30x!
It was also verified by
another forum member. It means, the changes of the terms indeed happened between last 20 days. But we have no way to verify now when it has happened.
Still, I 100% believe OP though since Nitro has a questionable history.
Also looking at the thread here:
https://bitcointalk.org/index.php?topic=5522885.0 you can see that the rollover requirement as recent as 1 month ago was still much lower with 20x
OP's complaint is against
Nitrowinner, and the other one which you have posted above is against
Nitrobetting. Both of them are independent platform, aren't they?