I was getting this warning in google play. This release is not compliant with the Google Play 64-bit requirement. The following APKs or App Bundles are available to 64-bit devices, but they only have 32-bit native code
I noticed that my apk had only x86, x86_64, armeabi_v7a folders. So I updated the gradle build script and now I have arm64-v8a folder as well. I see all the .so in armeabi-v7a generated in arm64 too.
How can I validate that this will support 64 bit devices
You can create an emulator with 64 bit image, to see that the app works on it.
Also, in your build variants, you can choose which active abi to use: