Systeme io Questions and Answers (FAQ)
Definitely. If you are running out of the custom domain quota or want to change to a new domain name, just delete the existing one and simply add a new one.
What happens to the existing funnels with the deleted domain?
Your existing page will automatically switch back to using the default systeme.io sub-domain. Once you have added your desired new domain, just go to Funnel settings to change the domain back to your domain.