Delete end device in (other cluster)

I was changing the settings in the network server address from our local server address to the things network address, the device has now greyed out and has the last activity as - Other Cluster.
I cannot open the device to make any changes. I would like to delete the device.
I cannot delete the application as it has a device inside the application.

Submit failed

application still has 1 devices

Any suggestions on how i can remove the device and the application.
Thanks.

It’s not clear if you are using a self-hosted TTS which is core to the issue. And which “things network address” you used.

If it was on one TTN cluster and you’ve used the address of a different one, then you’ll need to login to that cluster to access it.

If it’s self-hosted, I’ve no clue beyond saying I don’t think it works the way you may be hoping for.