I generate a certificate 3 months ago.
Today it expired and I tried to create a new one (I learned after that I should have renew the old one). I cannot make it work anymore
It produced this output:
cetificate not valid / it has ben revoced
My web server is (include version):
a synology
The operating system my web server runs on is (include version):
node js
I would like to know if it is possible to delete all the certificate issued with letsencrypt.org in order to start the process from zero. because I cannot create new certificates
revoking a certificate doesn't reset rate limit. it's like throwing water in bathtub into street won't reduce your water cost: it's already done, and removing it won't help.
now if you need to entering admin page ignoreding revoked certifate, type thisisunsafe on error page
There are a bazillion ways that servers can be set up, and many of them automatically renew certificates for you, but you have not provided nearly enough information for anyone to be able to help you. How did you get a certificate in the first place, and what problems are you seeing with that process now?
Which cert is revoked? On crt.sh | paraquiz.ddns.net I can only find recent certs which are "good". And for expired certs there is no OCSP response (obviously).
Anyway, as already mentioned earlier, OP can just use on of their current certs issued in February.