Unable to Progress Hunter Class Campaign – “Lending a Hand” (42388) Flag Desynced

Quest “Lending a Hand” (42388) is marked incomplete on my character (Hunter, Gryff – Kargath) despite already having Hemet Nesingwary as a follower. Blizzard GM support confirmed it shows as complete on their end. This has left me unable to progress the Hunter Class Hall campaign and complete the “A Glorious Campaign” achievement. Please help investigate — I believe this may be a quest flag desync from older account data. Thank you!