To run letsencrypt-auto, you need to use the following syntax:
./letsencrypt-auto renew --dry-run
You also have to run it from the directory to which you git clone'd letsencrypt. It’s not a system-wide binary (unless you installed it through your package manager).
An unexpected error occurred:
There were too many requests of a given type :: Error creating new cert :: Too many certificates already issued for: hopto.org
I have a free dns provider… mydomainname.hopto.org
I tried renewing only once and only for my mydomainname.
What can i do?
There’s no way to reset or bypass the rate limit of 5 certificates per domain per 7 days.
If you want to stick with a DynDNS provider, try one that’s included on the Public Suffix List. That way, you won’t share any rate limits with other users.
You could also get a free .tk domain at http://www.dot.tk/ and create a CNAME record pointing to your existing DynDNS domain, and get a certificate for that. CloudFlare provides free DNS if needed.