Testflight Users and Roles Add New Device

Hello.


From the last time that I have used Testflight I have gotten a new iPhone 7 Plus. When going to testflight a new game I was waiting for ages for an email on this device so that I could install my beta. I never got the email and after some looking around I realised that in the Users and Roles part of iTunes Connect and under my name was only 3 devices. But I cannot find anywhere where it will let me add a new deveice to this. I have added my new 7 plus into the certificates under devices.


Is anyone able to help that may have the same issue or someone who knows what I need to do.


Thank you


Lewis