The company is an internet betting site
Forget it. Poland has soon-to-be exceptionally tough laws on internet betting - essentially, only sports betting will be legal, and even then, it's going to be nearly impossible to get a licence if they're not well connected in Poland.
However in order to process credit cards our Internet payment provider requires that we are registered as a company in the EU
Can't you just set up in Alderney like all the others?