Happened to me a couple of times when royal mail got the postcode slightly wrong. The tracking usually stays on the same message and half the time shows up weeks later!

Anything else different about the notices?
Sent from a particular vendor? City?

Not thru biggy no. Other pipelines I did lose 2 which I attributed to my own stupidity and tightness by not registering and a thieving postman. He was later kicked for theft btw

Use a vendor who offers special delivery that will never ever go.missing a special delivery. It will cost about £5 more but it's worth it. Also worth noting that T24 is a load of old bollocks at royal mail. If you post on a Thursday it's terrible and you don't receive until Monday yet if you send one in sat it turns up Sunday. Sunday of all days, but the one sent Thurs still not here. RM is questionable at best in what they do with the t24's

First you should try another name to test your theory of them recognising you

Tell vendor change packaging to something different

It seems to happen for all different vendors though although my order from you a few weeks back came through👍i keep thinking ive found vendors whos packs will consistently land but then they start getting stuck at medway again and i just feel bad at this point asking for reships all the time

Your more than welcome anytime 😊