Grid Settings For Mobile App

Does anyone know how to edit the grid settings for my mobile app? The regular way in Setttings-Appearance doesn't seem to be working properly. I'm sure it's to do with layouts somewhere but I can't find any documentation that will help.

I'm trying to move from three columns to two, and to show the entire product name in the grid - and apply this to both the scrollers for homepage and the more general product view. At the moment, my product names are being cut off instead of showing in full.

Any help would be much appreciated!

Screenshot-2021-02-17-at-16-53-58 — ImgBB (