Term of service and terms and conditions

I wanted to start using the TOS plugin you developed because your products are amazing. However, I cannot figure out how to get rid of our existing terms and conditions. Any idea where the heck I have added this tool:

I inherited this WPMU install and I did research and it looks like this tool was enabled through an old plugin: https://wordpress.org/plugins/member-terms-conditions/screenshots/

I don't have that plugin installed though. I checked on the front end and I looked on the plugins folder on the server and there is no folder for /plugins/member-terms-conditions/

I am totally confused and want to remove this tool and enable your TOS plugin. Any ideas on how to proceed?