Songify is not working, what should I check?

I'm getting 'INVALID CLIENT: Failed to get client' when trying to link my Spotify account. How do I fix this?

I'm getting 'INVALID_CLIENT: Invalid redirect URI' when trying to link my Spotify account. What's wrong?

Songify isn't working properly. What should I check?

Viewers can't request songs in my stream. What's wrong?

Songify is using a lot of CPU when grabbing info from Chrome. How can I fix this?

Songify isn't displaying album artwork. How can I fix this?