Hi, after getting an error mail related to renewing Certificate, steps were followed from below link

https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-en

The encryption went fine as mentioned at the end of this link, but I can see the default page coming up which is in /var/www/HTML and it shows up apache ubuntu default page in my hosted address,
How do I fix this and get my earlier site working up the way it was.

Please help me.