404 Page Not Showing

Hi – Please could you advise.

I created a 404 page. I left the redirect in your plugin as a 301 … checked that it redirected to my custom 404 … worked great.

Changed the redirect in your plugin as a 404 … never redirected to my custom 404 again (even when I changed back to 301).

As the site is in development stage, I do not want to share the url. Is there an email I may contact you on?

Thanks.