It's working now. 🙂 A little update: 1) Rebooting (not installing/uninstalling the extension or restarting Chrome) helped, that's my fault really for not trying the most obvious thing first 2) I was getting the "Error deploying your GPT We've been notified and will work on a fix. Please You can try again later" when I tried to deploy my GPT. At first I thought that the problem was that the knowledge base was too big, but no, it turns out that it was caused by the GPT having the parenthesis symbols in the title ( ) We all know not to use those symbols for names in coding, but I had no idea I would be using it in that way when I made that assistant. 😄