SAP Mobile Cards - no data visible at the mobile device

Hi guys,

i just starting to play with the sap mobile cards by following these blogs:

Build a mobile reporting solution as a micro app in less than a hour! (with SAP Mobile Cards)

Basic Tutorial for SAP Mobile Cards Kit

As source iam using here an S4H OnPrem OData service:

https://<host>:<port>/sap/opu/odata/sap/SD_F1873_SO_WL_SRV/C_SalesOrderWl_F1873

As u can see i got an response with some SalesOrders:

The backend is connected via cloud connector and a destination is created:

If i check the the OData service from the "OData Application Destination Test" i can fetch all informations.

Therefore i think the connectivity works.

Afterwards iam creating the app by defining the parameters, upload json, create data mapping and finally save the app:

If i now switch over to my mobile, i can add my "cards" but w/o any data?

If i check the logs, i cant find an entry with an error etc.?

thx and br,

fabian