If you are having an issue with the Redbooth for Outlook Add-In, please try completely uninstalling and reinstalling the add-in.
Outlook Windows Desktop App
Outlook Mac Desktop App
1. Uninstall the Outlook for Redbooth add-in.
2. Delete the Outlook cookies file:
~/Library/Containers/com.microsoft.Outlook/Data/Library/Cookies/Cookies.binarycookies