Wrong Voltbuilder certificate

I tried upload .aab to android console,but it says cert is wrongly signed.i tried voltsigner and get google.json again.but still fail.please advice.

Error uploading to Google Play Store:
<HttpError 403 when requesting https://androidpublisher.googleapis.com/upload/androidpublisher/v3/applications/com.TsTan.MentalHelp/edits/12227020197071959878/bundles?alt=json&uploadType=media returned “The Android App Bundle was signed with the wrong key. Found: SHA1: CE:56:72:45:22:45:0D:04:79:64:48:35:58:FD:52:A7:9C:68:29:BF, expected: SHA1: 25:D9:8F:0F:F5:31:9A:18:D2:02:7E:C7:A6:B3:1D:83:62:AA:5C:BF.”. Details: “The Android App Bundle was signed with the wrong key. Found: SHA1: CE:56:72:45:22:45:0D:04:79:64:48:35:58:FD:52:A7:9C:68:29:BF, expected: SHA1: 25:D9:8F:0F:F5:31:9A:18:D2:02:7E:C7:A6:B3:1D:83:62:AA:5C:BF.”>
Build b0eeb1ee-72a1-4153-8b2b-47dacb2b9be3 failed

Fyi,i used google app signing…best rdgs,tst

You need to review this document on Uploading to Google Play.

I would like to know ,if i work through this document again,would the certificate go well with old app(building next .aab,future production build) ,and new app(building .aab, production built),all using latetest v8 win10 appstudio.thanks in advance,tst

Is the app already in Google Play?

There are apps in playstore.and some not yet uploaded cause wrong certificate.my main aim is to get more new app live in playstore.