What do i even do hear on Floor 16 1st fight? almost all my items are locked :d I suppose this is just where my run ends...
I did try reloading and moving stuff around but nothing helps oh well.
The problem is the far right three columns, due to the glass bottle making every weapon locked if an armor piece is right next to it (corners count).
Although it's likely too late, an easy fix would be moving all armor equipment to the far 2 right columns and making a line of equipment (such as relics, accessories, and consumables) in the fifth column to separate it from your weapons on the 4 left columns.