Additional meeting and call-related features and issues within Microsoft Teams for business
Hello, this is the only one on July 10th I can see that was related to Teams. When you go to the admin center, click on "Show more" > "Health" on the left. Make sure you click on "issue history" for those in the past that have been restored now. The one on the July 10th is TM635782, but TM642420 can be related to your issue as well.
Another good place to find incident/outage information is via the MSFT365Status account on Twitter https://twitter.com/MSFT365Status