If you aren't receving any callbacks there could be a couple of reasons for this, first of all, to receive callbacks you need to set a valid address in the document parameter "api_callback_url".
- The URL needs to be an HTTPS address, we don't allow communication over HTTP.
- The callbacks are are encoded as "application/x-www-form-urlencoded" and the body is sent as FormData, so to avoid Content-Type mismatch this needs to be expected.
If you still don’t receive any callbacks, ensure that our IPs are whitelisted and can send requests to your server.
The IP-addresses we use for respective environments can be found via below link:
Contact us at firstname.lastname@example.org
or call us at +46 8 557 661 67 (M-F, 08-17 CET)