Domain for email but website redirects not working

Domain for email but website redirects not working

I am trying to set up email for our local church and have bought a domain through Zoho as well as set up email addresses with the domain name. 

Our Church website is provided by achurchnearyou.com but now we have the domain name we want to use that as a link to our achurchnearyou.com page. 

If you type stmichaelshuyton.org into your browser it does redirect you to our achurchnearyou.com site. 

If you type www.stmichaelshuyton.org it gives a 404 error. 

Don’t use www. and it works, don’t use it and it doesn’t. 

I’m not techy, just a person in church who can help with the computer side of things! so please keep that in mind as you reply. 

Any help appreciated