We have the same issue. Applied for child renewal on 15 April and sent old passport back RM signed for. It never arrived. RM basically lost the passport in transit – which they have now compensated us for.
After countless calls HMPO advice was to generate a lost passport number online and call them back with it. That has now been done and they said this would change our application from a renewal to a replacement and tracking would be updated in 24-48 hours (so we’d know it was back on track and not sitting on hold waiting for a passport that may never show up). It’s 6 days now and nothing has changed. Waiting on umpteenth call back from the progress team. Online tracker shows no change – just the original date we applied – 15 April.
Basically 1 month in and no progress. waiting on umpteenth call back from Progress Team.
Hope you did get your get your passports back by now!?
Do you have any other tips / things we can try to get it moving along please? It seems that every person you speak to has a different story… so frustrating. 🙁