I would bet that you haven't registered as a paid Apple developer on the Apple Developer Portal.
When developing apps for iOS you are required to register with Apple as an Apple developer. There are 3 options a Free Apple developer Account which doesn't really allow you to do much at all, you can't test on devices, you can't submit to the App Store. There is also the 2 paid options.
Option 1: Is the first paid option for $99 a year which will allow you to create a provisioning profile and submit to the app store Option 1 can be found here
Option 2: Is for more bigger organizations but it cost $299 and can be found here
All the options can be found here
Once you are a fully paid up Apple developer you will need to create a provisioning profile which has your device on it. Once this is all complete you should be able to developer apps for your device.
If you are a paid up developer and have the correct provisioning profile please can you update your question and I will amend my answer.