Trouble Authorizing (logging into) Accounts in Twitterrific (iOS and macOS)

I'm having trouble logging in or authorizing with OAuth. How can I fix it?

There are a few things you can try to fix OAuth problems:

  1. Make sure the time/date and time zone are set correctly on your device. If they're off, OAuth won't let you authorize.

  2. Make sure you don't have multiple copies of Twitterrific on your device. If you have an older copy, delete it. OAuth gets confused when multiple copies exist.

  3. Make sure you're running the latest version. If you are not, delete Twitterrific and download it fresh from the App Store, DON'T re-install it from your copy in iTunes.