The cleverapps.io domain has been marked as dangerous. As far as we know, one or more subdomains have been reported as dangerous and the complete domain has been added to the list.
This means that your browser may show you a security alert when visiting a cleverapps.io site.
We are looking into reporting the mistake to the relevant lists and services.
Meanwhile, we remind our users that they should never use a cleverapps.io domain for production; they should only be used for development and tests.