I think I followed all steps which I have found so far but the download link for my alpha test isn't working.
I uploaded the app 3 days ago, created a google group and added the group to the list of alpha testers.
I invited a few members and the app status shows published, after clicking on the link I can signup as alpha tester, but when I click on "Download from the Play Store" the error message "We're sorry, the requested URL was not found on this server" comes.
Did I miss an additional step? Do I have to grant some special rights to the group members somehow?
--- update can this be caused by the permissions of the app? under the apk info in the developer console I can see: