midi keyboard input works strange

Musescore 4
MacOs 13.5
Yamaha YDP-S30
connected via MIDI-USB cord

Notes input is like:
Press a key on the piano - get a note in musescore.
Press another keys - get additional notes as a chord added to the first note (it doesn’t shift to the next position).
Shift the cursor to the next position and press a key on the piano - nothing appears. Many repeats - nothing.
Come back to the first chord and press keys on the piano - some of them add to the first chord (not all), I don’t see any regularity in this.

How to fix?