Worth noting that it appears `Install-PackageProvider NuGet` is still failing without first specifying to use TLS 1.2 solely. Assuming this is because that provider's download location is Azure CDN, which is outside the scope of PS team's control.
It's not licenses in Azure AD. The guide points to download of Ping Access for Azure AD which includes the ability to use 20 apps. If this is not showing up as expected in Ping Access then you can either connect with our or Ping's support team
I got an invite to join a meeting in @MicrosoftTeams I had to download the app.. reset my MSFT password, (i could sign in on the web, but not in the app). Then I got to downloadTeams AGAIN. 50 minutes later, I am in the app.
... I missed the meeting.