Setting memory points does not work

I need some help with the following problem:

Currently using the latest version of Rekordbox 2.2.4.

I want to set memory points, but they don't work.

To be more specific. When I click on the memory button, only a memory point is set on the beginning of the track, no matter where I am in the track,

When I click the button than once again, nothing happens. 

So only a memory point in the beginning of the track.

And no possiblity to make other memory points.

I would love to hear a solution,

Thanks!