Unable to register UDID on iPhone 5C to install iPhone 9 beta as part of Step 3 in below link. The "+" sign is disabled on my account. When I click on the "+" sign nothing happens. Has anyone seen this issue before?
2. Sign in to Certificates, Identifiers & Profiles and click the ‘Devices’ link under iOS Apps.
3. Click the ‘+’ symbol to begin the registration process.