Supposed Technical Error Keeps Guest from Booking

For the past few weeks I have been trying to book a property for an upcoming stay in Melbourne, Australia. I used Airbnb this past summer and had no problems whatsoever. My account has been verified and I even have a good review on file. Now when I try to book any property it says: “Sorry this property cannot be booked at this time. Please contact Airbnb Support.” It’s been saying this for weeks and for every single property available to book. I have contacted their customer service line multiple times to which they are completely useless. The first time I called they told me it would take one day and someone would get back to me with a solution. I never heard anything and every time I called back they had no way to help me besides saying that a “ticket” has been opened with technical support; they would get to us when it would be our turn. After asking to be transferred to a supervisor or the technical support department they said that it was not possible because they don’t work in the same building. Now, weeks later, I still have not heard anything and our vacation is coming up in a few days. Airbnb was our best option as it was the cheapest and most affordable for starting a year-long trip. To make things worse, it is high season in Australia at the moment so all the cheaper properties are now almost completely unavailable.