@ubi-thrupney thanks for the quick reply Unfortunately it's still the same, I tried fast travelling away and back a bunch of times but he's still missing. I followed the steps in the trouble shooting guide too but nothing changed.
I got to the place where the man is supposed to be but only the note was there. I searched everywhere and there isn't any man, I watched videos to see where he's supposed to be and tried going away and coming back, but still nothing. Any suggestions?