Question: Can't buy from App Store
Hi, I have just bought a 2nd hand Macbook Pro running El Capitan. I already have an iPad and iPhone and can download both free and paid apps on them. I set the Macbook up on my existing account but when I try to download any app I have to sign in with apple id, this works and I click install then get a message to verify my billing details. I click on this and get an error message on an otherwise blank page as follows :-
Your request produced an error.
Can anyone help, I am new to Macs as I have been a Windows user since Windows 2, I keep hearing about how much better Macs are than a PC and bought this to see if this is right but it's obviously not if I can't add any apps to it. Any idea what I am doing wrong?
MacBook Pro, OS X El Capitan (10.11.2)