Background:

In Feb 2021, I booked a flight for 2 people to Puerto Vallarta for Sep 2022 using my 2021 companion fare.
I ended up having to cancel the plans and chose to redeposit the funds into my wallet, which Alaska assured me would allow me to rebook using the companion fare on another flight.

I know the official language in Alaska's terms says that the companion fare can be used on coach/Main cabin roundtrip flights. I recently found out that the companion fare can actually be applied to open jaw (multi-city) itineraries (source: TPG, mypointslife, the list goes on). I attempted to change my flight to the following: SFO > OGG and HNL > SFO.

The site gave me an internal error message saying I had to call it in. The Alaska Customer Care team said that I could not use a companion fare on a multi-city itinerary, which is odd because I can't imagine that so many travel blogs are wrong. I tested this out by booking a brand-new flight using the same route using my 2022 companion fare and I had no problem, although I did not actually purchase the flight. The site showed me that the companion fare was applied to the open jaw route.

Any thoughts? I know it works on a new flight. I don't understand why Alaska is telling me otherwise.