I can be short here:
Already busy on this issue for about few days and tried nearly anything to fix this, but no luck.
In https://admin.teams.microsoft.com/company-wide-settings/guest-configuration I activated "Allow guest access in Microsoft Teams" and saved it.
In Teams still that msg appears "we didn't find any matches" if I enter an 'outside organisation' emailaddress.
I digged into the web but no so called answers helped me. Also waited for hours till this feature becomes active (seems it can takes a while) but after a full day still can't add guests which is very frustrating as we have a meeting tomorrow...
Tip: in https://admin.microsoft.com/Adminportal/Home I can't add any guests and when I follow these instructions on https://www.youtube.com/watch?v=uikm3MSHgiw I can't toggle "Guest" to on in anyway.
Can someone help me - tx in advance