As a possibly non-relevant comment, I currently have a curbside mailbox with the house number on the post. A number of years ago someone (I presume the mail carrier) pasted a piece of paper on the inside of the lid with the house number and my last name handwritten on it. I presume this was for the convenience of the carrier.
I’ve only been here barely a year, but yeah.
I get official government & financial account stuff for the immediately previous tenant who I met while it was still his apartment, not yet mine. I don’t know exactly where he lives now, but someplace else in this zip code. Near as I can tell he never bothered to put in any kind of forwarding order. For a guy with a professional career behind him, that’s a real headscratcher for me.
I also get mostly junk mail for about a half-dozen other names who were evidently previous tenants.
Maybe not, but basement apartments are often…weird when it comes to numbering, especially in old buildings. In either case, my building has 13 and 18, 23 and 28, (there’s no apartment 3, so no issues with 3 and 8), 21 and 27, which could just as easily be confused with bad printing on the address. It’s also much more likely that a one or two digit unit number will get mangled at some point along the way versus someone’s whole name.
We have a new carrier. The other day we got a letter addressed to the person we bought our house from. 38 years ago.
When I was a carrier, even longer ago than that, previous tenants who had filed change of address forms were listed on the cubbyhole for that address. I don’t think COA addresses are good for 38 years, though, so that probably got taken down a while back. Nevertheless, without a COA a properly addressed first class item should be delivered to that address. The carrier never knows who may be there.
Apartment buildings are different. Different from houses, different from each other, with a bewildering number of variations. Although a carrier could usually open a multi-compartment box and see what was written on the inside, not everyone is consistent or considerate. I can see why in some particular situations having the name on the outside is desirable. I also can see why some people don’t want their name on the outside.
I strongly agree with those who are saying the OP’s daughter should go to the station that processes her mail and talk to somebody there.
I believe the policy in Canada is mail gets delivered to the address, regardless of the name, unless someone has filed a change of address notice.