We have been using CUSTOMER API from long time. We have never faced this kind of issue. Today, we got a new customer, after successful oauth and billing he redirected to my application dashboard(Where we display merchant customers details).
Later, He came up with the complaint like he is not able to see customer info in the dashboard.
NOTE 1: He has customers data in clover
NOTE 2: The same API is working for other merchants(Who are currently using my application).
APP ID : VXAPP798TJ388
Merchant_ID : VXAPP798TJ388