Thank you for such a detailed run-down of your experience! This kind of comment is super helpful. :)
A couple of other players also posted about the bug you mentioned, and I have fixed it in the version I'm working on but haven't uploaded that build quite yet because I discovered a couple of other bugs that needed to get ironed out (just fixed those and expect to have the fixed version up some time tonight) and wanted to clean up the UI. (It's not quite where I want it, but it's better IMO in the newest version.)
I totally understand the confusion about not being able to go back to a previous screen, and the single-item-per-type inventory. While that is intentional, the fact that it's unclear is the result of the limited time to complete the jam.
In the version I will be uploading I tried to both pare down the text at the beginning and add additional details I thought were important - I didn't want to spend too much time on this though as I plan to have a more diegetic tutorial for the game when it's "done."
Thanks again for playing and I hope you will give it another shot once there's more content for it. :)