Official website address:https://www.ionos.com/

Use your account to login.

1. In the Your domain pane, click Manage Domain.

2. Open the DNS tab.

3. Above the DNS records table, click Add record.

4. Add a CNAME verification record

   a. In the DNS record type list, select CNAME.
   b. In the Host Name field, enter _acme-challenge .
   c. In the Points to field, enter Record Value in the log table.
   

   d. In the TTL field, leave the default value.

Click Save.