Oh hey so sorry, I thought I replied to this age ago, but long story short:
didn't get a hold of ps4 staff via email or otherwise (they just didn't reply to any of my messages; timezone issues I imagine) nor did things suddenly start working as I continued to play. But then in, April I think, the dlc bundle was on sale, so I just went ahead and bought it again.
So in other words, the issue wasn't solved, but nevertheless, case's closed now.