@Gino ********
I think there was an announcement last year about not coming in for extensions/renewals until shortly before your expiration date, so they could keep the number of people physically coming in lower during the height of the pandemic. So maybe the person you interacted with is still operating as if that's a thing? (Personally, I didn't run into the issue in Chiang Mai in December.) Or maybe they're expecting a surge of covid-related extensions over the next week, and trying to make everyone else take a back seat?