Building APK certificate error

[technofab]

Doesn't work I try like you say but doesn't work.

[Evgene Karachevtsev]

Technofab,

Please tell us, what error do you get when try build app?

[technofab]

The same error as above. Using default certificate also.

[Evgene Karachevtsev]

Technofab,

I just checked you shared project. One folder is still blue at the Source tab. Could you please try to delete it and then restore again? There shouldn't be blue color.

[technofab]

But not sources are blue and I'dind't any change.. So how to restore only this? I made the backup from the backup procedure on my panel. I delete and redo undo.. But I don't understand this way...

And infact, nothing to do.. same error. and now all is black.

For me, from the beginning, there is something with the certificate manager.

[Kateryna Grynko]

Hello,

Do you have a chance to restore the app from backup and try to build it?

[technofab]

I made the backup that previous Evgene indicate me to do.
So step-by-step, what I need to do? I've a starter account, so more 1 apps I can't have.

[Kateryna Grynko]

You could try with another free account, or you could delete the initial app and try restoring the backup...

[technofab]

mmm ok I'll do the second choice.. next deleting all telescope_Calc folder, and undo changes, i try to export, with mine certificate as apk and works.. But now I've some real doubts if the certificate is mine or not. I've only one certificate loaded and setted as default..

So witch is the different to choose use default or choose the certificate name? How to check wich certificate is in use in the app? I want to be absolutely sure the app is using mine certificate.

[technofab]

Now, I switch only to release, and same error as above....
-.-
also switching between certificates... boring..

definitively, the matter is switching to release from not.. and the above question is stil valid.

back to unchecked the release option, so NOT RELASE, the apk was build, otherwise is release is checked, the builder doesn't work and fails with
Build error
Most likely build error cause:
App signing error has occurred. Please check your key/certificate alias and passwords.