Applab wait time before testing?

Hi all,

When submitting an application for applab (just as a release channel, not for the store just yet), I have noticed that it sometimes takes a very long time before users (including myself) can test the application. Is there a way to check when this is ready/how much time is remaining? 

The app is listed, but when launching it, it just keeps loading. When I sideload the apk myself it works fine.

Thanks for your response!