Shouldn't happen if the device exists. Have you tried restarting the server?
Yes I restart it
Thanks for answering.
DigitalOcean 1-Click, Version 4.10, No modifications.
screenshot of the device
https://yeeliztechnology.net/gps-tracking/screen_shot.png
No extra spaces around it?
No.. No spaces
Don't really have any ideas then. But I would recommend upgrading to the latest version.
Ok, thanks Anton.
Can you please give me an idea how upgrade in Digital Ocean?
Just follow our documentation.
Unknown device, after deleting it for one user and creating it for another.
Help me, please