Did you get a exact message telling you that your domain has hit the limit? If so, then I think you might be able to issue a new certificate in the next two days. (timezone convertion is a mess to me)
Just FYI: If you save the certificate content and the private key file for the certificate you obtained, you can install it as many times as you want (using only the files, not requesting a new certificate) while the certificate is still valid. If you request a new certificate before the old one expires, the old one is still VALID unless expired or revoked.
What happened to the other 4 certificates generated within the last week?
Since you can reinstall them and keep using them up to their expirations dates, you should not need to generate more. If you are running into a configuration problem, just save your certificates and private keys and reinstall them with your new instance or changed configuration.