2.3.1.1. Processing requests to non-existent subdomains

For the site to accept all requests to subdomains that were not added in the section "My sites»:

1. Open up site settings.
2. Enable the option “Handle all requests for non-existent subdomains * .example.com»:
3. Save your changes.
4. Wait approximately 15-30 minutes for the changes to take effect.

This option must be enabled if you need to install wildcard-certificate from Let's Encrypt.