As off October 2017, Google Play has announced a few in Google App Signing Policies.
In order for your apps to Go Live, you will need you to complete the below steps before we can upload the Android App. Only the account owner of the Google Developer account can do these :
Login to your Google Play Developer Console
Click on your App Name or add a new one
On the left hand side panel, click on App Releases
Under "Production", click on Edit Release
Under Google Play App Signing, click on Opt-Out
Click on Confirm to Opt-Out
Please let us know once this step is completed at support@plobalapps.com or email your customer success manager and we will proceed with publishing the app :)
Hope this article is useful :)