That's an issue some users have been having that I'm not exactly sure the source of. Could you try logging out manually via the button and logging back in? That's usually helped!
I just tried that, as well as reinstalling from a fresh download. I noticed someone mentioning that things work better in the C Drive? Maybe I'll try installing it there.
Edit: Unfortunately, fresh install to C Drive, disconnecting from Twitch Authorized Connections, and clearing some browser cache didn't help.