Joining the YouTube beta program on TestFlight offers several advantages:

He was paused.

Certain system-level integrations, like Siri Shortcuts or widgets, may temporarily break or behave unpredictably on TestFlight builds. How to Provide Feedback to Google

If that doesn't deter you, follow the strategies above, and hopefully, you will receive that coveted email in your inbox soon. For the rest of you, YouTube Labs and the Android Beta program are the easiest ways to get a glimpse of what YouTube is building next.

Click the public TestFlight link on your iOS device. One of two screens will appear:

A new notification popped up.