A/P Vendor Activity

SOLVED

Hi,

A customer that has Sage 300 2019 (all programs at server) is having an issue with A/P Vendor Activity. No information showing there and name of columns doesn't appear (I attach screen) !!! This happens in only this user and another one. All others not a problem, everything works fine. This doesn't happen in those two PCs a few days ago. What could be the problem? Re-install again? Regacc.com? Not sure how to fix.

screen

Thank you very much