My Cloud (OS5) web app

Hello Everyone,
I need your help.
I have an old server that I do not use on My Cloud web app.
This one appears offline > that is normal.
I want to remove this old server from My Cloud web app, I have not find an instruction about this operation.
Can you help me ? Have you a solution ?
Thank you forward.
Kind regards.

Hi @fragments,

Please refer to below link to check How To Remove A My Cloud From a MyCloud.com Account:
Error