How to delete a unique certificate

[kadoudal]

I have a self-signed certificate I want to get rid off ...

SETUP PAGE
IP Address 88.191.202.38 Exclusive (1)
Certificate ceramique-isabelle (Repository of domain ceramique-isabelle.fr)

SSL support off

trying to delete it
REMOVE
The following certificates owned by ceramique-isabelle.fr will be removed:

* ceramique-isabelle

Confirm removal

raised an error ...

Error: Unable to remove certificates: one or several certificates are assigned to the IP addresses.

what should I do ?

thanks for your help

 

[kadoudal]

forgot to mention that the manual states :

If the certificate that you want to remove is currently in use, you should first release it: in the Certificate drop-down box, select another certificate and click OK.

ok, but in this cas there is only one certificate and no drop down button .....