Support
One developer answers these.
Contact
Write to kenneth@matsuokengo.com.
A site that gets past the guard is more useful as a report. The “Report a site” button in the extension opens a prefilled issue with the details filled in.
Common problems
Undirect does not appear in Safari
Open the app once, then switch Undirect on in Safari's extension settings.
How do I turn it on for a site?
Open the site in Safari and press the Undirect button. The guard is off everywhere until you do. Press it again to turn it off for that site.
A site stopped working after I set a rule
Press the extension button, find the host and choose its default option. That removes the rule.
I cannot change rules on iPhone or iPad
The list in the app is read only there, because iOS gives an app no way to send changes to its own extension. Change rules from the extension button in Safari.
A window I wanted was blocked
Its host is in the list. Allow it on that site, or everywhere.