Hi,
I'm attempting to restore my Thingy91x to communicate with my instance of nRF Cloud (I had removed the certificates previously to test out the connection to another cloud provider). I've run the Python script(s) suggested by docs.nordicsemi.com/.../Credentials.html to generate the device certificate and private key and have loaded them onto the device using the Cellular Certificate Manager.
However, when running the nrf_cloud_multi_service, I see the following errors:
```
[00:03:39.172,058] <err> nrf_cloud_transport: MQTT input error: -128
[00:03:39.172,149] <err> nrf_cloud_transport: Error disconnecting from cloud: -128
[00:03:39.172,180] <inf> cloud_connection: Disconnecting from nRF Cloud
[00:03:39.172,210] <err> cloud_connection: Could not connect to nRF Cloud
[00:03:39.172,241] <inf> cloud_connection: Retrying in 30 seconds...
```
Can you help me understand what I'm doing wrong?