title: IAP is not working after published in to play store in alpha release
body: <p>I am developing the flutter app which has In-app-Purchases feature, I have created the non-consumable product (one time) in the developer console. And I am using the official flutter package to implement IAP in the app - <a href="https://pub.dev/packages/in_app_purchase" rel="noreferrer">https://pub.dev/packages/in_app_purchase</a>. </p>
  
  <ul>
  <li>IAP product is in active state in the play console</li>
  <li>I uploaded the right version and version code of the APK</li>
  <li>My app is in published state</li>
  <li>I have added the license testers under account settings to test IAP.</li>
  <li>my androidManifest.xml file updated with right user permission for BILLING.</li>
  </ul>
  
  <p>when I test the IAP in local it works well, I am able to test the IAP properly.
  but after I published the same (generated App bundle) in to play store under Alpha release, it does not works. If I check the logs using the abd logcat, then I just getting the below line related to billing</p>
  
  <p><strong>BillingClient: Client is already in the process of connecting to billing service.</strong></p>
  
  <p>I am not sure, should I specifically do any app signing before generates the app bundle after added the IAP. I am just using the existing key information which I have used for previous releases to do the app signing.</p>
  
  <p>Kindly let me know if anybody can help on this problem and I can share if anyother information is required</p>