Android Question Enroll your app in Google Play App Signing (Solved)

Hello community

Does anyone updated a new App to GooglePlay in the last months?

Question: How update/signing a new App to GooglePlay using b4a?

We have created a new App, it's ready to release but now googleplay console looks different to me.

first, I see the message: Ready to publish

then: Enroll your app in Google Play App Signing

following the instructions I get this:

Export your app signing private key
Follow these advanced instructions if you do not store your private key in a Java Keystore.

Click to expand...

1. 
   
   
   • Export your app signing private key to a plaintext PEM file.
   • Use this code (the code performs EC-P256+AES-GCM hybrid encryption) with the hex encoded public key (a 4-byte identity followed by a 64-byte P256 point) below to encrypt your app signing private key.
     eb10fe8f7c7c9df715022017b00c6471f8ba8170b13049a11e6c09ffe3056a104a3bbe4ac5a955f4ba4fe93fc8cef27558a3eb9d2a529a2092761fb833b656cd48b9de6a
   • Continue to upload your encrypted app signing private key to Google.

Click to expand...

I really don't understand what I should do.. thanks for any help.