404 error for subdomain sites

My Main test site https://zbu.nuz.mybluehost.me/ (and dashboard) works fine.
My subdomain blog1.zbu.nuz.mybluehost.me dashboard gives me the 404 error Bluehost page. When I try to visit the subdomain site it gives me a Bluehost domain page.
Bluehost said it isn’t them. I have followed the steps and was successful in installing the Multisites panel. I have created a widlcard using the Subdomains panel. I have created an A record for the subdomain site using the DNS Zone editor. Nothing has changed. Any advice would be appreciated! I have been spending 3 days on this and I am very disappointed it is not working. I am not sure why?