Hello,
I have a free provisionning profile on apple (https://developer.apple.com/account/#/welcome) and have previously registred my IPhone which still work fine. I can install my apps on this iPhone 6 device. I now have an IPad which I want to add this for testing applications. As I can not find the certificate manager under Account, I can not add this iPad.
Please help Thanks
You should use the same process to build to the iPad as you did with the iPhone. Connect your device to your computer, then start Xcode and it should show up in the 'Device' menu, same as the iPhone.
If it's not there, check iTunes to confirm it's being seen by macOS. Keep in mind too that there is a reported limit of 3 devices when using Xcode's free provisioning.
Note that registering a device at that link is a process that only applies to devs in possession of a paid Developer Program account, so in your case, that is a dead end.
