doesnt matter what it ‘sounds like’ - just what it is. Maybe not obvious to some, United Vacations has nothing to do with United really, and is just a travel company that licenses the United name for marketing purposes and sells the packages using [primarily] United flights. Works the same way with other ‘vacations’ brands - Delta Vacations, etc.

to be fair, United Vacations sells both published fares, which would earn the same mileage as tickets bought from UA.com, or unpublished (or Bulk) fares where the earning structure is different. It does say (I think) what type of fare you are buying per-purchase.

but I suppose that’s off-topic. Yes, seems like a call to the MP service center is in order. If bought on United.com, you are due the mileage, unless there is something ‘off’ between the ticket and the FF account, like a name mismatch (and middle initial vs. full middle name would do that). Though in my experience, and going back to the old days where you earned strictly based on mileage, I can’t remember having an error with crediting on a plain vanilla regular ticket bought on UA.com for UA flights. On very seldom with partner flights, or sometimes with IRROPs, yes (and sometimes, those IRROPS errors were in the pax favor).