Developers, Please help me with this.

Yes, you have to put "CN=".
CN=E3679178-9C0A-424D-93A0-9BEDE0AC2B5D

Ok, so i did that, and now I get this error when trying to upload:

Validation errors
3117: We were unable to unpack the APPX package. Try again or submit a different one.
 
Ok, so i did that, and now I get this error when trying to upload:

Validation errors
3117: We were unable to unpack the APPX package. Try again or submit a different one.

You really need to do it with VS as suggested by Rafael Yousuf in post # 7.