When you are switching hosts it's important to update your DNS records in your Ezoic account to match those as they appear at your new host. This is because Ezoic sits in the middle of the request chain, between web users and your host, and needs an up to date copy of the Ips in order to know where to go to fetch your content and return it to visitors via our proxy server.
You will need to update the full list of DNS records (all A records for example). Typically when you move hosts the IP address changes but you may also find the record type does for some entries too.
To find your DNS records at your host you can use this guide, hosts may also call these zone files and they can usually be found in the zone editor:
This guide will help you update your DNS records at Ezoic in a couple of clicks: