How to manage TestFlight subscriptions on macOS?

I purchased a subscription within my TestFlight macOS build. I would like to access a screen to manage subscriptions and cancel it. How can I do that?

I can't find this screen. In the App Store app I can only see my personal purchases.

If you are using TestFlight, then Sandbox would be used.

Please let me know if it works / doesn't work for you, thanks!

How to manage TestFlight subscriptions on macOS?
 
 
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