Eclaims Vrbo trip cancellation

booked a vrbo trip with the chase sapphire preferred card. unfortunately i broke my leg several days before the trip. the vrbo owner didn’t want to refund or give partial refund.
i was looking thru the benefits of the cards and it says trip cancellation is covered.
i went to the eclaims website and started putting info it. it would not let me complete since it is asking for flight info even with me putting in n/a and it would not recognize vrbo under travel booking vendor.
would calling the 1800 number be easier or is there a trick where i can just put in the vrbo dates?
what are my chances of getting this approved? i have the emergency center paperwork and x-rays etc