Arduino iot cloud & The Things Stack

I found a nice solution to control my mkrwan 1310 via arduino iot cloud.
I found the following documentation

but this is when you start from scratch.
However i have my own lorawan gateway and the devices are already working.
When i overwrite in the arduino iot sketch the secret parameters SECRET_APP_EUI and SECRET_APP_KEY with the info from my Devices as shown on TTS i see data uploading to TTS but not to the Arduino cloud.
can anyone put me on the right track?
Thanks Jo

@jogeris, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project :wink: See About the Installation & Troubleshooting category.