I think there is nothing to worry about, the promo code will just not be valid, nothing else will happen.
It’s a valid promotional code, it has green remarks that tell you the code you input is working.
However, there will be no change in your balance. It seems like $0 promotional code.
Can we as a registered user create our personalized promotional code too? Did I miss something on this?
You will probably have the Roowards activated by adding the promocode. Do you have access to this? With this you will have access to daily rakeback, monthly cashback and monthly bonus (if you wager enough offcourse). There is no way to create your own promotional code.