Unable to connect to nRF Cloud using nRF Cloud Multi Service sample

Hi there,

We have an Icarus IoT board, which uses an nRF9160 SiP. I am trying to get the nRF Cloud Multi Service sample to work. I am getting the following errors:

mqtt_connect failed -111

NRF_CLOUD_EVT_TRANSPORT_CONNECT_ERROR: -9


I have followed these instructions, trying both the AT Commands method and the computer-based method but to no avail. The only difference is that I didn't use the Onboard API endpoint. I uploaded the Onboard.csv to nRF Cloud through Add Devices > Bulk Onboard. I'm not sure if it's pertinent here but the device is then on the list but with the sub type "unknown-pre-onboarding".

I have looked at the modem trace and observe the below. I'm no expert with modem traces but it seems strange that the device sends a [FIN, ACK] message, which to me seems like it's the device exiting first.

Can you please help me find the issue? 

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