I need help related to Alias, a friend uses a digital business card platform, where he uses a secondary domain and directs an alias to the root domain. But it is having problems with the CAs, when it reaches 10 certificates in the main domain it stops creating certificates for the aliases. Can anyone help with this case?
Let's encrypt allows up to 100 (sub) domains in a cert, so you are far below the limit. See FAQ on how to debug issues when LE refuses to issue a cert: https://forum.howtoforge.com/threads/lets-encrypt-error-faq.74179/
