403 error, but same call with Postman does work?

[alex254]

• Wordpress version, WooCommerce version and WooCommerce.NET version
  woocommerce 7.00, woocommerceNET 0.8.4.

• Steps to replicate the issue

trying to connect to a customer woocoomerce site to Getall products. We have exchanged keys and when we try to sync we receive a 403 forbidden on the call. We've also tried it with sending the keys in the querystring. Also tried it on www subdomain and without.

However the strange thing is: if I post the same call with postman with the keys in the query string it does work. What is the difference between the postman call (in the headers maybe?) and a woocommerceNET call?

thanks Alex