This server is not a remote storage node
Remote-node routes (register, regenerate token) returned 400 because the server is not a remote storage node.
Why this happens
Action targeted local or CDN (or a non-node row). Only provisioned remote nodes use the node agent package/token flow.
Diagnose and fix
1. Open a remote storage server created via provision — not local/CDN.
2. Use Provision a remote storage server (token + package) to create a proper node.
3. Regenerate tokens only on remote nodes.
4. See Connect and enable the storage node.