There's a reccuring glitch where the item you need to use is highlighted in pink but when holding to click or just clicking, it doesn't work. Not sure how to fix, still happens even after reloading save or restarting
Open the game folder, you will find a folder named "saves", you will see a number indicating page and position, for example for a page 1 save 8, it will be page 1-8-LT1.save. If you don't know exactly, can take the full page of saves where the savefile with the bug is located and send it to me by email in a .zip.