Questions

Hello, I have an issue when I try to publish one of my app in Play Store. Until last year, I published my app building it from your source code with my Android Studio on my dev machine, and everything worked well. Now I've decided to publish an updated version of my app to Play Store directly using your downloaded .AAB file, because it's quicker.
So I downloaded your .AAB file and published to Play Store, but I get the following error message:

Your Android App Bundle is signed with the wrong key. Ensure that your App Bundle is signed with the correct signing key and try again. Your App Bundle is expected to be signed with the certificate with fingerprint:
SHA1: B5:61:34:66:BB:6F:D3:1B:9F:B4:FB:04:40:21:9A:76:C9:98:3D:DE
but the certificate used to sign the App Bundle you uploaded has fingerprint:
SHA1: 76:B4:2B:A4:4C:1A:31:2E:15:2B:82:D6:42:BA:E7:04:3F:2B:C8:25

How can I reset it so that, from now and in the future, I can upload directly your .AAB file to Play Store?
Thanks!