W indow,, PLAY MONTAGE ,, does not see any animations. Help

Hello.

I have a problem. I am just learning the program. I am trying to do Ledge Grabs and I am stuck at the stage of adding animation to the “PLAY MONTAGE” window.

The program does not find any animations that I have either downloaded ready or made. It does not see them..

Do you have any advice on what I am doing wrong?

I am learning from the video
https://www.youtube.com/watch?v=gzb356i0Fqk&t=676s&ab_channel=DEVenestration

And when selecting the animation (29.03) I get an error: Not compatible with this pin.

Does the animation have to meet any special conditions?