Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
Thanks a lot for your reply.
And yes , you’re right : currently, I intend to use a subdomain, and this is the reason why I tried to create a new certificate (or modificate the current one).
Note, though, that the exact error messages matter quite a lot. There are several different rate limits covering different things, with different limits, for different amounts of time. In the topic subject, you say the issue is that too many certificates have been generated. However, in your first post, you say too many requests for a certificate have been generated. These are two very different things. In the future, posting the exact text of the error your receive (or perhaps a screen shot) will help us help you.