Letsencrypt does not provide a certificate

I am hosting a site for a friend with a different domain name than mine.
The domain is: https://www.garagedecheseaux.ch/

I forgot to save the acme.json file once the certificate was validated and I restored acme.json which did not have the key for this domain.

Now, for this domain, I have a CN=TRAEFIK DEFAULT CERT. How do I get my certificate?

I see that my old one has expired: crt.sh | 5425180323

Thank you very much

Sorry, I resolve now my problem :sweat_smile:

but I would still like some information. Is there a command with traefik to test certificates and force renewal? Or if I understand correctly, I have to delete the entries in acme.json and restart traefik?

Thanks for your information.