idk if this is a problem or not but for some reasons the mustache smith wont let me sell stuff but just "talk" with him and i remeber that before i was able to do sell and buy stuff with him is there a way to fix it?
Try moving closer or further away. I've noticed that the game can be a bit picky about where you need to stand, including for different interactions with the same NPC.
Try entering a dungeon or building and then exiting out. Sometimes the game is weird and won't allow the option to buy and sell stuff from the Smith unless you do that.
