My aab app work now using a 2048 certificate :
step 1: Compiling .aab and submitting to Play Store Guide but it's impossible to upload an aab using a 1024 certificate
step 2 : adt -certificate -validityPeriod 28 -cn SelfSigned 2048-RSA certif_2048.p12 yourPassword
keytool.exe -export -rfc -alias 1 -file upload_certificate.pem -keystore certif_2048.p12
step 3 : go to https://support.google.com/googleplay/android-developer/contact/key?hl=en
Developer account ID : ******
air.myApp
Yes, Google Play manages my upload key
I have an upload key-related issue
I lost my upload key
upload "upload_certificate.pem"
describe your issue : I have a 1024 key, and Google Play need a 2048 RSA key for upload aab file.
step 4 : wait 2 days and compile aab using "certif_2048.p12" and upload it