About the contract with Booking.com

HI I'm Nora Esquivel, Casa Colonial La terraza , La Habana, Cuba Owner .

I'm working with Booking.com during more than one year and I'm passed my virtual cards by TropiPay , now they ask me for the contract with Booking.com 

My questions is... How I can resolve my contract with Booking.com??, please its important for me. I

I need to show to TropiPay I'm working with Booking.com

Thank you, Nora Esquivel