Smartsheet for Outlook only works on default email account.

edited 12/09/19 in API & Developers

I installed the Smartsheet for Outlook App and it works fine *BUT* it only shows up on my default email. 

I am running Outlook 2016 on Windows 10 and I am using Outlook to access 7 emails accounts,  both business and personal (a mix of MS Exchange, Pop, IMAP) . I have installed "Smartsheet for Outlook" and it works fine on my default Inbox (The Smartsheet logo is visible in the upper right corner of the Outlook) 

However, when I switch to the inbox of one of my other mailboxes, the Smartsheet logo disappears from the Outlook dashboard.