The "dnalounge" Instagram account was created by one of my employees years ago, but none of us can remember who that was, or what email address they used.
I jumped through the hoops here, including sending them a scan of a utility bill and whatnot. The first time they flat-out ignored me. The second time they wrote back, but after three go-rounds with the support drone, they basically told me, "if you don't know the email address, go fuck yourself."
So who can reset this damned account?
Update: Got it restored, thanks! (It only took the assistance of three Instagram insiders, one of whom is a director.)