Battlefront II Error 770 + Sync Corruption in BF1 & BF2 – PC Issues

Hello EA Support, I'm facing connection issues in two games on PC: Battlefront II: Every time I press "Connect" in the main menu, I get Error Code 770 and can't access multiplayer. Sometimes, I also get this message: "Your last sync was corrupted" Battlefield 1: The game shows the same "Your last sync was corrupted" message either before or after launching, and I can't play properly. What I've already tried: Clean boot, Run as admin, Allow through firewall, Repair game files, DNS change (Google), Disable IPv6, Reset network, Use hotspot/alternate network, No VPN or antivirus running. Please check if there's any sync or account-related issue on EA's side. Both games are unplayable in their current state. Thanks in advance.