Bare URL not working

Bare URL not working

Hello,

Created a ZOHO site, added existing domain under Configure > Domains, installed SSL cert under Configure > SSL.

Followed and instructed domain name host (NameCheap) to apply instructions as given here:
https://zohosites.wiki.zoho.com/domain-mapping.html

The following URLs work:
https://www.mydomainname.com
http://www.mydomainname.com

The following URLs (bare) do not work; browser just sits and eventually times out saying that site cannot be loaded/found:

Advise appreciated.