I well configured the certificate on my appliance Fortigate 100F, by following the procedure on the Fortinet official website. Everything was good !
Then, for "teaching" my coworkers, I deleted all "Let's Encrypt" generated certificates on the appliance. And try do the procedure again. It is not working anymore. I have an error every time I'm trying. The message :
"Error (Unsuccessful in contacting ACME server at https://acme-v02.api.letsencrypt.org/directory"
But I can ping it ...
How can i do for it work again please ?