Same thing happened to me and a friend. Tried restart computer, steam-- deleted arma3battleye.exe and redownloaded using steam verify integrity -- issue persists.
I narrowed down the issue to Mods (at least for me)
Launching the game using No Mods works fine can play on servers as usual.
However, launching using CUP - Units or TRYK (more mods are probably effected but these were the only ones I used that had the issue) my launcher stops responding and stuck on loading screen when I join servers.
Deleted + re-downloaded all mods didn't work.
Status logs are the same with and without crash--