Google play store - can't install beta

Question

I'm developing a new version of my Android application and I'd like to distribute a beta version to my testers. I created a group of private testers and then I uploaded my beta APK (more than 24 hours ago). At this point I'm facing a strange behaviour:

• Google play store notified my app update only to my testers;
• When they try to update they get and error like: "Application cannot be installed because it's yet installed. Error code: -1"

I signed my APK with same keystore I previously used and I set an higher version of versionCode and versionName. App package is still the same.

Dogface

What is the status of your uploaded new APK version? Is it "Update pending" or "Published"? – Chrysler

@noogui published. I tried on other devices and It works. – Dogface

then it's a device issue? (it works on some and doesn't on others) or it coulde be that the email on the device you're using is not included in the list private testers – Chrysler