H2N4 not working on Pokerstars.com (even if it's importing hands)

Hi, HUD is not working on PS.com, even if it's importing hands and everithing seems well setted.
On PS.it is instead perfectly working.

What can the issue be?

PS: all the problems started when i created 2 different instance of H2N4, one for playing and the other for studying.
Then i disinstalled and reinstalled H2N4, but the problem persists