Problem building app - App Groups entitlements

[Peter Bloxidge]

Hi, I'm very new to app building so a lot of this is confusing to me.

So far, I have successfully opened your repo in Xcode and I've replaced all the Identifiers to my own name.

When I try to build, it tries to fix this issue:
None of the valid provisioning profiles allowed the specified entitlements: com.apple.security.application-groups, com.apple.developer.healthkit.

but then it fails and says this:
"Communication with Apple failed"
"Your account does not have sufficient permissions to modify containers."

Can you please explain why this is, and what can i do to fix it?

I'm not paying for the Developer Program so I'm only a free account. Is this the problem? Does this mean I can't install anyone's example code on my device at all?

Appreciate any help you can give to a new Xcode user.

Thanks

[Peter Bloxidge]

Also, I'm using Xcode 7.3.1 incase that helps.