We are getting a persistent error message on every screen in the wordpress backend every day for the last few months and it will not go away. There is no way to dismiss it.
It says: One or more newsletters have been blocked due to severe delivery error. Check and restart.
We had some issues with some of our newsletter sends about 6 months ago because there was a blank email that was throwing an error but we have resolved it. How can I get this message to go away apart from editing your plugin files. Is there a patch that you can provide or something. It is quite irritating and at this point it is confusing our staff.
Thanks.