AppxManifest file is not generated correctly

I used Visual Studio 2015 tools to create an Apache Cordova project. However, when trying to upload my app package to Windows Dev Center, I get this error:

3201: The display name of the publisher, $ username $, specified in the package does not match the name of the publisher, Ciaran, which is associated with the developer.

When inspecting the source .appxmanifest file that is generated automatically when I build my application, I found that it is generated with placeholder variables like $ username $ instead of my actual username. I've already used the Associated App Store option and it reports success, although this doesn't seem to affect the generated appxmanifest files, neither when creating the app nor when creating the app package file.

I have already tried contacting Microsoft support about this issue, but so far they are just linking the documentation to me in the application manifest file, which doesn't seem useful to me, because the Apache Cordova project doesn't seem to give me any control over the manifest file applications. If I try to change it manually, it gets overwritten again when the app is built.

I tried re-creating the project and I tried to cancel and delete the app from Windows Dev servers and try again and again, but I still face this problem.

Any ideas?

UPDATE. I contacted Microsoft support regarding this issue, however I was told that the support team does not support Apache Cordova projects. Additionally, I was told that submitting apps from the Visual Studio 2015 beta is not allowed, that views are only possible through the retail version of Visual Studio 2015.