Why isn't the installation progress at Warzone going up?

I got Call of Duty Warzone on Ps4 yesterday and then noticed the installation progress but somehow it doesn't load, is that ahead?

Possibly. Hard content is prohibited in some German states and is not loaded.

Can't be, my friends play the game too.

Possibly. Unstable internet line, Playsi hard drive full?

Times router and then restart the Playsi.