RAK831 Errors. status gateway "not connected"

hi everyone, I have a RAK831+Raspi 3B 868MHz. I followed the tutorial on https://www.thethingsnetwork.org/labs/story/rak831-lora-gateway-from-package-to-online to make Lora gateway but after making a gateway on thethingsnetwork.org the status is “not connected”.Can someone show me how to fix it?
gateCapture
When i run ./start.sh
1PNG
when i run systemctl status ttn-gateway.service
error

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