"Unplayable" is the right word and I am glad you used it rather than softening it. The product names on the shelves were rendering at 6px. Not small, unreadable.
That is fixed and live now: product names 9px, department signs 10px, the stat captions and the instruction line raised too. On the first screen the share of text below 9px went from 48 percent to 20 percent. I picked 9px by measuring the longest product name against the tile width rather than guessing, so nothing truncates that did not truncate before.
The rest of what you describe is the real problem underneath, and I am not going to pretend the font fix solves it. You clicked everything, saw money moving, worked out you had to open a store, and still could not tell what you were doing. Four people have now said a version of that. The screen asks you to understand it before it lets you act, which is exactly backwards for something people reach by clicking a link.
Worth a second look now if you have the patience, but the honest position is that I have fixed the thing that made it physically unreadable, and the thing that made it confusing is still in progress.