@Oliver28......It may be that you didn't lose it Oliver!
This is assessment time, and I was informed that I would be re-assessed for my badge on 14th October and I noticed through the day today (13th Oct) that the badge was missing from my listing page! It didn't concern me greatly because I have not hosted with Airbnb for 6 months, and only recently started taking bookings again, so my bookings and guest reviews are absent over that period!
But I just received that celebratory email plus the offer of credits and when I logged on the Superhost badge was back so, Oliver, just be patient, your stats are brilliant and I can't help but think you will retain it!
Keep up the good work mate...you are what Airbnb does not deserve, but needs....cheers....Rob