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.
My domain has been limited and I don’t know the reason why.
Although I did reinstall my server and LetsEncrypt to the domain like 5 times, but not 50.
Renewals are treated specially: they don’t count against your Certificates per Registered Domain limit, but they are subject to a Duplicate Certificate limit of 5 per week. Note: renewals used to count against your Certificate per Registered Domain limit until March 2019, but they don’t anymore.
A certificate is considered a renewal (or a duplicate) of an earlier certificate if it contains the exact same set of hostnames, ignoring capitalization and ordering of hostnames. For instance, if you requested a certificate for the names [ www.example.com , example.com ], you could request four more certificates for [ www.example.com , example.com ] during the week. If you changed the set of hostnames by adding [ blog.example.com ], you would be able to request additional certificates.