"Square Enix is not at fault for the loss of items and will not reimburse or compensate said losses."

If you lost items, that's on you. If you lost them due to a bug, glitch or anything on SE's side, then they would (no guarantee) possibly give you them back.

Since the issue isn't on the Devs side, they're not going to do a thing.

One small point though: Apartments don't get deleted or removed, even if you stop playing the game. There is no timer linked to Apartments.