Nothing to see here... all working as intended
I obtained my code just now without any difficulty. But why does it have to expire after 72 hours? That severely restricts usability while travelling outside the UK with limited internet or phone access. Why can't I have the choice to allow the code to remain valid until I choose to revoke it, for example by signing in again and cancelling the old code or generating a new one? D'oh! it could have been made so simple!
Anon, as I have just left feedback to this effect on the DVLA website, and we all know "they" read the Reg...