Frontpad wordpress

There is a working solution to the integration of frontpad with woocommerce. Implementation via cURL as in the example of frontpad documentation. Orders come correctly, but sometimes at some times the same order is re-created. Support writes that 99% of the problem with the server and does not want to change something (the support was asked to accept the internal unique order number wordpress and then at any re-circulation would not create new orders, for which the refusal was received).

We need someone who can solve this problem.