well, to debug
you can see exactly what is being sent and received in the server log.
double-click on the line and a popup should appear where you can copy the full line and inspect it in an editor.
I don't think anything on Aware's side is related to the 20 recs.
I don't know about authentication for this app and if its a get/put, etc., but
Using postman, curl, browser... whatever will work, if you can send that same string to their endpoint, you'll prolly see the same 20 recs returned.
If you see more, then yes, maybe an issue with aware, but if the same 20 were in the editor, then the host is maybe sending paged results.