Add-in for outlook log in issue

I don't know if this is the right forum but here goes. 

The zoom add-in for outlook is asking me to log into Zoom. I use facebook as my log in for Zoom as the accounts are linked. However, in the outlook add-in side bar that pops up for my login...there isn't a facebook option? I use my facebook log in credentials and I'm told it's invalid. Not sure what to do? 

Thanks!