The site developer added the plugin when the website was built 5 years ago, and I don’t know if the settings were adjusted at that time. I’ve never been able to change them. I click on a grey button and it stays grey. I’ve never been able to add a notification email address and have never received notifications from the plugin.
This is a screenshot of the staging site plugin – same as the live site before deactivation.
I use EUM on a live site and its staging site, on GoDaddy Managed WordPress. The plugin worked well for years on both sites without an issue. Recently the plugins on the live site auto-updated and those on the staging site did not. I asked GoDaddy Support if they disabled EUM on the live site and they claim they did not. I deactivated EUM on the live site and disabled auto-updates via WP. So far no auto-updates on live site. EUM still active on staging site and working properly – no auto-updates.