At Evil Controllers we only use official stock controllers provided by Microsoft. These are the same controllers you would buy at your local department store, except with our modifications added to them. Our modifications actually have no effect on the component of your controller that syncs it to your console.
As a result, if your controller is having issues syncing to your console, we recommend you follow the steps provided by Microsoft.
If you need further assistance, please don't hesitate to reach out to us, however those instructions will be the best course of action.