- Plesk Onyx for Linux
According to Let'Encrypt official documentation, Let'Encrypt certificate issued more than 5 times per week, using the same hostname (e.g. example.com) considered to be Duplicated.
However, when Let'Encrypt certificate for domain example.com has been issued more than 5 times in Domains > example.com > Let'Encrypt the following message appears in Plesk interface:
PLESK_ERROR: Rate limit has been exceeded for example.com. Let’s Encrypt allows no more than 20 certificates to be issued per registered domain, per week.
This is a Plesk bug with ID EXTLETSENC-598, which is planned to be fixed in product future updates.