Hello divaincantare. Sorry to hear that you are having trouble with your game. Have you tapped on the crafting hut and scrolled through the items to see if the yellow glass is still stored in there? If you’ve confirmed that the yellow glass is stored, but it does not show as an item available for the villager to use when you drop them on the crafting hut, it usually means that the villager does not have the required skill level to use the item (in this case the yellow glass). Try using a villager with higher skills, varying the area of expertise if necessary.
If this information is not helpful, it would be best to submit a Support Ticket directly to Customer Support, so that you can get the right help for your situation.

Just tap the “Help” button inside your game to get started. Not sure where the "Help" button is? Tap the "gear" in the upper-right corner of your game to access the Options Menu, which is where the "Help" button lives.
