I'm still using the white & orange seller app because the newer blue one doesn't sound as good. This afternoon I printed my monthly statements out for the current year. Opening the email with the "downloads" just took me to something that looked like the app but said it was open in the browser & I had to log in again before I could print anything. The seller app was working fine before that but since then every time I open the app I get the "uh oh, there was a problem" message & all my messages have disappeared. If I go to my profile to try to log out & back in again, I get the error message too. I can use the desktop version but I'd really like to get the app going again.
Uninstall the app and reinstall