Heltec CubeCell AB01 - Unable to connect via SCPF

I’m not able to connect to Heltec CubeCell AB01 to TTN.

I setup a 1ch TTGo gateway and it works properly. But when I run the LoRaWAN sample code, I’m not able to connect to TTN.
I entered my nwkSKey, appSKeym and devAddr in most MSB - significant bit format. I learned that OTAA does not work with 1ch gateways in V3 so I used ABP. I received an upload link massage but there is no download msg. And my app and device never showed a connection in TTN.

Does anyone have an idea what’s missing?

Seven other channels for an actual gateway? Which is what the CubeCell is expecting to interact with - it knows 8 channels, the other end is listening on only one and probably only one SF at that - not 8 channels and 6 SF’s simultaneously.

A Single Channel Packet Forwarder is disruptive to the network - as you have just discovered - so we’d kindly ask that you disconnect it. A forum search for SCPF will find numerous explanations.