Hi, love the game, but encountered a couple of issues
On day 2 (or 3?) I bought an extra pack of stamps for that level. The following day I didn't get any upgrades, but there was a second stamp kit on the table anyway which had the spinny animation, but was not clickable/moveable and stayed there for the rest of the game.
Also, on the final day I got the extra customer boost, but at some point when I clicked the next button, no customer would appear (but the next button was still available to click on). No "End Day" sign spawned either, but I also didn't realise until after I quit the game that you can press A to end the day. Maybe it would be nice to add those extra controls in the info book as well?
Other than that, can't wait for more story! Love the audio and ambience, fits really well in setting the mood i think :)