Tae boi

Hi!
 

I downloaded Aotr 8.0 and tried to play through the campaign but i'm stucked because a bug.

As u can see on the picture i can't go through at the second stairs.(after you entered the castle)

As i printscreened it my cursor is vanished but in-game it looks like a block icon.

I checked it on youtube in other gameplays( version 7.3.)there was the situation how when the player going through the FIRST stairs then he get a battalion and 3 uruk hordes attacks him.(second picture-If u don't know which is my gameplay,i have Boromir)

I don't know what to do because this is the main way of the story,i tried many things but still not working,at the second stairs still didn't get vision,nothing spawned like enemies or allies soooo...yeah.

I hope we will find a way to solve this problem.(yeah and forgot to mention i tried to reload the map 3 times but the bug is still there.)

Thanks!

EDIT:Somehow i can't see here my own pictures and don't know how to post it.