Outlook 16.42 and Groups missing and issues with O365

Overall love this version, but am seeing 2 issues with this new version:

1) Groups I've created in Contacts are no longer visible, and the option to create Groups also is not available. When I switch back to the old Outlook (it's a toggle at the top of the screen), Groups are back and usable

2). I have multiple O365 accounts (3) that I use in Outlook, one of the accounts does not seem to function properly when I switch to the new version.

Would welcome input on both
Outlook 16.42 and Groups missing and issues with O365
 
 
Q