How to resolve Author signature issue?

I have an app on tizen TV store and when I am trying to update version then I get the following error "Author signature of the App you would like to register is set incorrectly. Try check your author-signature.xml file please."

Please help me to solve this issue.

Let's check step by step....

• The package you have uploaded was generated using 'Right click on project > Build a signed package?

• Make sure you are using the same keystore than in previous app. You can find the Certificate Manager under Tools > Certificate Manager

If you have several certificates profiles and want to check which one was used to sing your published app, you can:

1. Download it from Samsung Seller (under Information for Verification > App Source)
2. Open the wgt file using 7z or similar.
3. Locate the author-signature.xml and signature1.xml files and open them using an editor (Tizen Studio, Notepad++, ...)
4. The first KeyInfo > X509Data > X509Certificate tag on author-signature.xml corresponds to author.crt file
5. The first KeyInfo > X509Data > X509Certificate tag on signature-1.xml corresponds to distributor.crt file