ThingPark Community Connection to IBM Watson IoT connection issue

ThingPark Community Connection to IBM Watson IoT connection issue

Hi there,
I wish to send data which is collected by sensors via TPC to IBM Watson IoT. I followed the instructions at public documentation (https://docs.thingpark.com/thingpark-x/latest/Connector/IBMWATSON/) . 

Paramaters that matched show at drawing 


Problem: TPC connection cant be established and there is no record (either error/info etc) as shown below


so any idea where to start? or do you see any issue in the parameters? many thanks in advance, reha