The mailpoet plugin is required by the theme, which causes wordpress to constantly show a notification (aka nag) that the plugin needs to be either enabled or installed depending on if it is deactivated or deleted.

In the functions.php file, we initially changed ‘required’ => true, to false for the following array:
array(
‘name’ => ‘MailPoet Newsletters’,
‘slug’ => ‘wysija-newsletters’,
‘required’ => true,
),

Unfortunately, that didn’t seem to work, so we implemented a workaround by changing the $config = array(‘dismissable’ => false, to true and reloaded the wordpress admin page. Success! Now you can dismiss the notification and it won’t show up again.

Furthermore, we noticed that every time a page loads, we were still getting calls to the mailpoet plugin folder, which no longer exists and threw errors. While not necessarily a big deal in general and invisible to the average user on the site, it did bug us enough to investigate. A little snooping brought us to the culprit.
The following procedure will alleviate this issue:
1. Open the functions.php page and comment out /* — */ any text where you find “wysija”
2. Open the header.php page and comment out /* — */ any text where you find “wysija”
3. Open the footer.php page and comment out /* — */ any text where you find “wysija”