Next, we are going to submit a request for a free wildcard SSL certificate which will be valid for the given domain name as well as any subdomains.

1. Choose Request a public certificate and then click the Request a certificate button.
2. Enter *. into the Domain name field.
3. Click the Next button.
4. Choose DNS validation and click the Next button.
5. Skip adding tags unless you use them and click Review to proceed.
6. Confirm the domain is correct (this cannot be changed later).
7. Click the Confirm and request button.