Most rate limits are limiting the amount of certificates issued and are “connected” to the amount of certificates already issued for a certain domain.
But as your certificate has expired and there are no new certificates issued recently, I’m not sure which rate limit your hosting provider is referencing to.
It could be one of the following rate limits:
- Failed Validation
- Overall Requests
- Accounts per IP Address/Accounts per IP Range
- Pending Authorizations
- New Orders
But if you read the explanation of those rate limits on the page linked above, you’ll notice those rate limits are not actually ‘connected’ to your domain name, but more ‘linked’ to how your hosting provider would request certificates from Let’s Encrypt.
So if your hosting provider is responsible for the certificate issuing, I would recommend you ask them again which specific rate limit is being hit and remark that there are no recent certificates for your domain name issued (see link to crt.sh linked above) and thus it should be something your provider needs to fix.
Also, I’m curious which limits Let’s Encrypt introduced that recently, as claimed by your hosting provider.
Also number 2: I’m moving your thread to the
Help section, as you’re actually looking for help and not actually having troubles directly related to issuing any certificates yourself.