The only apartment unlock that isn't tied to a story mission is the one for winning 10 multiplayer combats. They do not count the story line combats. If you completed that challenge, then you should have received all 9 section by completing Day 47. I got my last two sections on Day 47.
There are 9 total unlockable sections, I msg'd nDreams about this issue last week & this what nDreams tweeted to me Jan. 22nd...
|nDreams Ltd @nDreamers||22 Jan|
@TBC915 I wouldn't worry about it, looks like a little glitch our end, wont effect anything though!
Looks like it is effecting ppl after all,.. hopefully they'll fix it for those that were 1 mission short in the count totals.