Works fine on mine, but today is ever so slightly (and importantly) different...
... at the very top it now says:
You have 1 of the following offers:
> Gold Upgrade(s) for Two
Only thing is... it doesn't say how to use it?! It says you can use it on paid or redemption bookings... but can you use it online? Doesn't seem so as there's no option for it when doing a booking.
Anyway, that's all academic as I won't be using it online