Solved
Key Bindings resetting to default
Keybindings are all [CM - removed] up. Tried to map melee and grenade to my mouse buttons. Any button I select shows as mouse button 5. reset to default and tried to play and my grenade was selected as default and it was constantly switching back to it. This is NOT the time to have these types of isuues. Crap like this should have been addressed in alpha or beta!
[CM - updating thread title for clarity and visibility]
This happened to me as well. You have to go to users, (user name), documents, battlefield 2042, & delete whatever is in that folder. Relaunch game and start all over
