May you please tell us the step of how to create a sub domain ? step by step so your users can follow it as well.
If your subdomain is the same as your main domain,just add a subdomain in Domain Manager
If your content is different
Just create a new site
after creating the subdomain through the add site in the second example it does not connect when I try to access it through the browswer.
What does the browser display? Can you show me the screenshot
subdomain dns manager Do you add a record
This is because your domain name is not resolved
You need to add an A record resolution at the dns service provider