After joining a coop server, I got "Error loading game mode assets".

Refer screenshot.

When starting Commander training, fire support cannot be used as pressing O shows all options with red cross.
Cannot continue training.

Irrespective of whether I look through binoculars before or after, I keep getting this issue.

Refer screenshot.

Choosing from video presets like Low, Medium, High etc resets Audio setting.
My master volume along with music volume are reset every time I choose one of the presets.

In coop, I was on first floor and bot was on ground floor. I was firing bullets which did not make any difference. When bot started firing, I was stuck and could not move. After few minutes there was a blast and I was launched out somewhere else.

I have recorded the video but since the size is big, I cannot upload it.

I am attaching a screenshot from the recorded video.

Before :-

After :-

After I joined the game, first spawn, I was unable to move or even go to main menu or do anything in-game. I had to kill the process to quit.