I had a look on your account and saw that there are quite a few tags missing on your videos, for keymailer to find your "SCUM" videos, you need to add the tag "scum game" and they should show up.
Your "Rust" games need the tag "playrust".
Your "Dead by Daylight" Videos need the tag " dead by daylight" and every letter has to be written exactly the same, as soon as there is a capital letter in there, keymailer won't find it anymore (annoying, I KNOW!!!)
As soon as you tag them like that they should show up!
Have a nice day