I listed a Marriott Timeshare this year for a last minute opening since we couldn’t go. . Just one specific week. I didn’t have to show any proof or bills etc. I just listed the unit and details and listed the nightly price. Someone booked it, stayed there and paid. Now I have that week open for 2023. It’s my only available week. I don’t have any other AirBnb listings.
I wish I could help but I didn’t run into the same issue.