Microsoft Teams Mac – problem logging in – MacRumors

I have an Office 365 subscription (Family, 5 users) and have downloaded the Teams installer .pkg.
No problems on my Macbook Pro (Monterey) logging in with my personal account.

I use the SAME installer on my iMac (Monterey, same version) but when I want to log in, I get the message

This version of Teams only supports work or school accounts managed by an organisation.​

Strange. Anyone ?