Oil leak - Help

[milowanman]

Hi! I have a bit of an issue with oil leaking, which is hindering the flex pipe and smelling awful.

 

I replaced the oil trap, as seen on the right in the video. And it's sealed now. However, to the left of the oil trap, I found a bolt, but there's no bolt or anything there. I'm wondering if there should be or what it's for? It's threaded for something there.

 

Also, it looks like the drive shaft has at some point hit the oil pan or something, right? (Video #2)

 

Grateful for any help!