Oculus Go Store – Beta testing of the app

Hi everyone!
I have uploaded my app to alpha and beta channels for Oculus Go. Then I added another account as "Developer" role. Then I run my Oculus go linked to Developer account, switch to "developer" home view. After that I see the application, but it is not available.
It said me this message like this : "This app is not availbe for install. It's available only for testers and developers!"
But I use developer account!!!
How to make beta test, like TestFlight on ios, but for Oculus Go....

Oculus Go Store - Beta testing of the app