Sorry to hear about this bad experience.
Besides the "contact Airbnb "issue (which is indeed a issue these days for everyone):
IMHO Airbnb is not responsible for your personal belongings. Your travel insurrance maybe can help.
Regarding the amount of money it seem to be expensive items involved, maybe you have other insurrance on them ?
I'm one of the Community Managers here on the CC. I'm genuinely sorry about your experience. I just dropped an internal note to the CS team and they came back to me saying you've been contacted by them and working on a resolution. I do hope it will be a fast one. Please do let me know how things worked out.
Talk like a local!
Sorry to hear you were robbed but confused as to why you are contacting Airbnb when you should be contacting your travel insurance company to me a claim.
Airbnb is a listing company not an insurance company for guest property.