I've seen this has been posted about before, way, way back but I just stuck in my Manga UK DVD copy of the Macross Plus OVA and the discs are all mislabelled and because the DVD I have is part of a twin-pack with the Movie Edition which I don't own as I picked this up individually in CeX, I don't have the first two episodes to watch.
From my research it seems OVA disc one contains Episode 3 - 4, OVA disc two includes the Movie Edition and the Movie Edition disc contains Episode 1 - 2 so I'll have to pick up the Movie Edition on DVD to get Episode 1 - 2.
I didn't pick up the blu-ray Ultimate Edition as I don't like awkward sized cases. I will be picking up the standard blu-ray for the Movie Edition though but I am still hoping down-the-line we'll get a regular sized LE / CE which includes the OVA's.
Tbh, the Disney+ versions of Macross Plus are probably better quality than these old DVD's but I don't have much need for a D+ subscription at this point in time. Plus I just want to own a version of the OVA's on home video.