purge acme-client completely

[rade]

Hi,
I cannot update any certificate anymore. If I remove the os-acme-client extension, the configuration data remain - and with them the source of the problem somewhere.
How can I purge this extension comnpletely to be be able to reinstall it from scratch afterwards?
I try to avoid a reinstallation of OPNsense in total.
Thanks for helpful hints.