Can't connect to MS Teams Invite in the App

[LisaV73]

When I am logged into the free version of MS Teams and have an invite for a meeting, if I click the JOIN button it takes me out of the app and into a browser window.  It then asks if I want to install the app (that is installed, and just left when I click JOIN).   Why can't I connect from the app directly without it opening a Browser window?  Please help!

[#2]

When someone send this invite have the sent it the same email ID? or some other ID?

[#3]

@Madushka Dias they sent it to the same email address that I'm signed into with MS Teams.  

It's a Yahoo Email address.  That address is what's registered to my Microsoft Account.  I have that Yahoo email address set up in my Outlook on the Windows PC, and that Windows and Microsoft Account is using the same address.