Hi there! I’m really sorry to hear about the issues you’re facing. This extension has been around for over two years and is actually one of my most popular ones, without any similar issues reported previously. There might be something unique in your setup causing the problem. I’d recommend checking out our Discord server at https://discord.gg/dXez8Zh. You can create a new post in the extensions channel, we have a very helpful community. As for the refund, you’ll need to reach out to Itch support as Itch doesn’t provide me with tools to refund you myself. Hope this helps!
No worries, I understand your frustration, I’m sure we can figure it out! Please go ahead and create the post in our Discord server.
I just tested it again with a completely new app yesterday that’s in development mode, and it worked for me without issues.
Is it possible you perhaps didn’t copy paste the correct thing? SAMMI asks only for the two values that are returned on the webpage, credentials and refresh token. I also recommend using the ‘Copy’ button to copy it to clipboard rather than selecting and copying it manually.