Players have reported problems across Call of Duty: Modern Warfare 3 and Warzone with server issues affecting multiplayer, Zombies, and battle royale. Activision has commented on the issues--including that they may also impact Modern Warfare 2--but here's what you need to know before logging in to play.

You can still try to hop into matches of Modern Warfare 3 and Warzone, but you'll want to beware that in addition to difficulty finding matches, many players have suffered reset stats, bugged weapon progression, and lost progression on the battle pass and events.

Activision has acknowledged the issue with a post from the official Call of Duty Updates account on Twitter and announced that a fix is in the works. However, it warns that players may still notice the "unusual behavior related to account level and loadouts." A timeframe wasn't provided, and it might be safer to avoid the game until the issues are resolved.