I had this issue and I upgraded to try to fix it. Then I got the error, “Fatal error: Access to undeclared static property: wp_slimstat::$options in /home/gregmartin123/public_html/wp-content/plugins/wp-slimstat-user-overview/index.php on line 39”
I had to manually disable the plugin by renaming the folders to get into the site (which is a business site). How can I get things up and running again? I’m worried about losing our past analytics.