@Paul-and-Laura1 It has been my experience that a 1099 (and I have received 1099s for properties for 15 years) reflects the total amount that is charged to the guest for the accommodation and all relevant transactions, even those that are not paid to me.
So, for each guest, the 1099 would tally what the income was, including the service fee paid to the OTA, the service fee charged by the OTA for processing the guest credit card, any additional fees for pets, refundable deposits, and the taxes. If there is a refund attached to a reservation, the refund is NOT deducted as it was income at some point.
I have always been able to get my 1099s to tally when I include all of those monies. I then make sure that I have properly shown the deductions (OTA fee, credit card processing fee, refundable deposits, taxes and other refunds) on my schedule E (or C) so my actual earned income is properly represented.
If that does not help, you might wish to speak with a tax professional so that you comprehend what a 1099 from an OTA is going to show and how you adjust your taxes to reflect your actual receipts.