[Plugin: JF3 Maintenance Redirect] redirect only partly working

Hello,

It works great with custom HTML. I didn’t check the “Message only” option.
When I upload a custom file and set redirection it doesn’t hide existing pages. If I type in a non existing page it redirects to the right URL. Please fix it

One more question: Is it uses 503 http header for redirection?

thanks.

https://www.ads-software.com/extend/plugins/jf3-maintenance-mode/