We have had a number of people who have been requested to resubmit (often multiple times) information that they submitted at their original appointment. Did you by any chance also apply for a Bescheinigung des Daueraufenthalts last year (you didn’t need to, but there was a lot of advice to do so for simplifying the process for this year’s Art 50 EUV card procedure)? It seems people who still had a pending BdD application seem to have been stuck in “parallel procedure paralysis” – with information going between files for both residency permits – often causing considerable delay.