No Teams Mtg button in Outlook

I have a unique situation where the add-in is listed as inactive with no location present. We have done the following to no avail:
[10:03 AM]
Hi, sorry for the inconvenience. Yes, we have tried loading MS Teams add in loader . dll but it doesnt work
[10:04 AM]
reinstalling MS Teams should have re created a new ms teams loader and it doesnt work as well
[10:04 AM]
we have also tried manually registering the teams add in - it went through but not registering in Outlook
[10:05 AM]
there's something wrong either in the registry of your computer or somewhere that i cannot answer. that's why we have assigned it to our support who has elevated rights to investigate this
[10:05 AM]
ok. do you happen to know timing? That was 2 weeks ago that you and I communicated.