Cancelling due to issue with place

[Mary1142]

Hi, I am looking for some guidance.  Host for 8 years and just had to cancel a guest due to a smell in condo that could not be identified nor fixed without opening the walls.  I had it fixed and have the pictures and receipts.  AirBNB penalized me 50% of the reservation.  Should I be able to get that back with the proof?

Thanks for help,

Mary