Magento 2.1.x. How to Manage Ajax Compare Module
Here you can find the instructions on how to manage the Ajax Compare module.
Products compare is one of the standard e-commerce features. We have created the special module for the convenient use of this feature, it is based on AJAX technology, and allows you to add products to compare without having to navigate to the separate page.
You can either enable or disable this module. In order to do this, navigate to the admin panel and choose the Stores > Configuration section in the left side menu.
Then choose the TemplateMonster > Product Compare Ajax item on the new page on the left side.
Disable the products compare option for your website
Then tap Save Config button.
Clear the Magento cache.