1. Log in to your 1&1 Control Panel and select the relevant package.
2. Click on Domains & SSL in your control panel:
3. Select the domain you'd like to change name servers for and click on Nameserver under Actions.
4. Click Use Custom Name Servers and enter the name servers provided by Ezoic ('Settings' > 'Nameservers' > 'View Instructions' in the Ezoic Dashboard) in the Name Server 1 & 2 fields: