Headz Up for people in Bangkok
It appears 90 days reporting by foreigners can no longer be done at either Imperial World Mall (Big C Lad Prao Soi 83) or at Big C Ratburana Road (across the river in Thonburi).
People who went there the past couple weeks have been told to go to Chaengwattana. I don't know the exact date they're not accepting them but I wouldn't waste a trip finding out :(