Does the Sterling-EWB have a BT QDID host software stack reference?
Infineon/Cypress supports the QDID host software stack in the WICED platform as shown below.
WICED Host SDK for BT5.0
D038395 : https://launchstudio.bluetooth.com/ListingDetails/61365
WICED Host SDK for BT5.2
D050754 : https://launchstudio.bluetooth.com/ListingDetails/120227