White Label using Google play console

[Tiger1]

I am trying to White Label my APP - Android first. I am getting this error in Google Play Console:
Unoptimized APK

Warning:

This APK results in unused code and resources being sent to users. Your app could be smaller if you used the Android App Bundle. By not optimizing your app for device configurations, your app is larger to download and install on users’ devices than it needs to be. Larger apps see lower install success rates and take up storage on users’ devices.

I went through the steps inside Appsheets to get my APK. I placed that in Google Play Console. But i cannot get past this error. The “start rollout to production” is greyed out. Any help would be appreciated. I tried using Android Studio as well - like it said to try - Google bundles. I am lost there as well…