How to Use Wildcard Subdomains
If you have a site that uses an ever-increasing number of subdomains, such as WordPress Multisite, ServerPilot makes it easy to add a wildcard subdomain to your app so that requests for any subdomain will work for your app.
First, open the Settings tab of your app in ServerPilot.
Then, enter a wildcard subdomain into your app's Domains field, using the standard asterisk (*) format:
Click + Add.
All requests for your subdomains will now work for your app.