Deactivating Plugin

I want to stop using the plugin. I have removed from the widgets and deactivated but it still shows up in some of the page sidebars.
Using Meeta Theme

These pages have the problem using Firefox browser. (I have cleared the cache)
http://islechamberofcommerce.org/
http://www.islechamberofcommerce.org/isle-days-celebration/
http://www.islechamberofcommerce.org/contact-us/

If I use Chrome this page still has issues:
http://www.islechamberofcommerce.org/isle-days-celebration/

I’ve looked on mobile and a completely different computer and some pages don’t have the Timely events list in the sidebar and some do.

HELP!