The reply I got:
"1. Unfortunately we've added all the stock we can to the online site so it's unlikely we'll be able to add any more here.
2. The codes are not available with the digital edition of the magazine.
Just to make you super aware of the situation going forward, this is just one of the planned code giveaways which will happen across Europe, not the only one. We've got the codes out there first, but if you're unable to get a hold of the items then there will be more chances to do so in the future."