Dwarves And Doguns Part 4 Is Broken And Buggy

So the iron door after the elite dogun wont open ive tried for half an hour

then i think let me die so i will be reset respawn in TERNAVES from rodoroc because reasons

so i head back thinking i solved it now the elite dogun wall wont open so i have to glitch passed it
and the iron door still doesnt open!

Im no longer capable of completing this quest because i just dont know why it wont open
Ive killed everything there from the generals the doguns to the mortars if anyone knows how to fix this
please let me know