I’m having some trouble accessing your website now, because your domain’s nameserver settings are not correct. The nameservers to use are ns1.epizy.com and ns2.epizy.com.
There are no nameservers ns3.epizy.com and ns4.epizy.com. And you should not just start making up your own
And referring back to this guide:
I see you have moved your files and the contents of the database. However, you still need to add the credentials of the database to the WordPress config file.