I cant login my App Store from my Macbook Pro OS X Lion
Hi,
I need some advice and help. Recently, I upgraded my iPhone OS to iOS 10 and discovered that my Macbook Pro OS X Lion couldn't detect it. However, as I wanted to upgrade my macbook pro OS to Sierra, I couldn't login to my App Store.
Despite entering the correct password, a message sent to my iPhone informing me a device is login in Singapore. My phone and my macbook is in Singapore.
How can I install Sierra despite from login fail? Please help!
iMac, Mac OS X (10.6.8)