Can't use my controller

I've never had a problem with my controller in the game but recently I can't play the game using my controller specifically in online games. I've tried it in an offline game and it works fine. I tried using my keyboard and it also works fine. There's also an orange triangle icon above my controlled player when it's usually red. I checked the settings during one of the games and it says keyboard only, I tried to change it but it didn't work. I went into another game and checked the same setting and it wasn't there anymore.