Hello @Sammy35
Qouted:
"as in the case of a same day booking and same day cancel before checkin, the 48 hour grace period would not apply because the reservation is not at least 7 days out, correct?"
Firs: I do not not understand what you mean by "community experts" (they do not take phone calls ...)
The 48 hours grace period (to cancel with full refund) is provided from moment of booking AND check-in must be at least 14 days ahead. That's what in my opinion the policy is saying:
https://www.airbnb.com/home/cancellation_policies#strict-with-grace-period
If somebody books same day and cancel before check-in full refund is only possible if there appears to be a serious problem with the accomodation or misunderstanding (Airbnb will decide about it, same for extenuating circumstances). But the "grace period" should not be an option (BTW the confirmation of the reservation should not mention it also)
Phone calls: I never use CS by phone, I sent a message via the contact pages. But i am in Europe, maybe different (better) service, allthough replies are taking much more time the before Corona. If really not satisfied with answer/solution try Twitter (account: AirbnbHelp)
Best regards,
Emiel