I solved installing the game with Windows Defender turned off. I’m not sure how it worked because I’ve got an error message about Battleye after the installation, however I can play on official servers now…
Anyway have to rant a little bit about this thing since imho this is not a good way to distribute a videogame. From one side, Microsoft seems not to care too much about how the games run on its platform since it offers a game that doesn’t work correctly, in fact many players couldn’t even open the game at all. From the other side, Funcom itself made a game that requires to be installed with the firewall turned off in order to be played (and nobody tells you), because they had to pick the weirdest and most complicated anti-cheat system, which causes many problems with a lot of games.
Moreover there’s a funny thing that really makes no sense! I’ve noticed that if I play with the firewall turned off I can see nudity, otherwise I get the characters censored. This is not a problem for me but it’s absurd anyway! ^^’