@g-ker @Nubasuk I'd start by adding an exclusion/exception for the FAF Client in both the active scan & firewall sections of their AV software & Windows Security.
If that doesn't work, then try a VPN.
If you continue to have issues, please open Run (Windows+R) & go to the following:
%USERPROFILE%/AppData\Roaming\Forged Alliance Forever\logs
Click the Reply button at the bottom between the 👁 (View) icon & the "Mark unread" button. Next, drag/drop your client.log file (the Text Document file without the date) into the Reply message window so those that can help (not me) have that data to look at.