The problem with EuroAion is that it's hosted in EU and could be an issue since Gameforge has the right to host Aion in EU
Now,legally talking,it gets strange,usually hosting an older version of the game shoudn't be an issue,on the other hand, i'm pretty sure GF can do whatever the fuck they want,BUT,as other P.Server being hosted in EU haven't faced any issue regardless of streaming (such as Not Aion), could be that they are scared of loosing players.
What i suggest, is that people who got banned, should send an Email to Ncsoft NA and ask them more info about the rights of streaming 4.6
Funny things, Metin 2 had thousands of P.Server.And none of them had any issue,same for 4 Story
I'm 99% sure,since Aion is theyr most profitable game, that they are just scared