Not working on WP 5.5

Quick fix: I commented out all lines referencing switchbutton() in wp-reroute-email.js.

This quick fix fixed the admin menu, but it’s still not rerouting the emails for me in 5.5, as if it is not active.

Same here, though it seeems that since the update the emails are neither delivered, nor stored in the log. They seem to just vanish.

Resolved the issue. Please check now.