The replacement code is in the format of XXXX-XXXX-XXXX-XXXX-XXXX, mostly letters with the odd number here and there.

I'm going to phone again tomorrow and have them apply the code themselves and fix the account, instead of sending me things and asking me to do it knowing full well there isn't a way to do it. The person I spoke to said she would send me instructions how to apply the code, but she didn't Why? Because there is no way in Mog Station currently to do it. Sneaky!

Thinking about it, the cost of these calls has probably already amounted to more than if I just buy the £14.99 digital CE upgrade, but I'm not doing that on principle.