Reward booking made on the app today, failed to attach the BAEC number. Mrs Badger suffered the same 10 mins later on a separate reward booking.

Neither the app nor ba.com MMB could subsequently attach it, offering up the helpful "Unknown Error". (Notably, neither could Royal Air Maroc, so possibly a backend issue or possibly I made an error on that page)

Gold line managed some witchcraft (or at least the intervention of a colleague) to get it into the booking and all was well, but even looking at it from BA's point of view - something that should be simple and 30 seconds online has tied up an agent for 5+ minutes.