Custom MIDI controller issues

So I made a custom MIDI controller with the LIVID brain v2. On a 4x4, I have programmed for the top 3 rows to play sounds and the bottom 3 are scrolling. When side-scrolling, there is no issue, clips play respective to the left-most red line box. When vertical scrolling, however, nothing plays. Not even out of order. Any reason for this?

Thank you!

Edit: even scrolling with the Custom controller and playing with a standard keyboard is fine. The keyboard plays withing the red square. The controller seems to not work at all when I move the red square anything below the top line.

Edit: ignore that top edit. Turns out everything stops working upon vertical scrolling.