Understand Chrome Debugger
The fastest way to debug potential issues that arrive while setting up experiments is by installing Convert Experiences debugger plugin from the Chrome store, located at https://chrome.google.com/webstore/detail/convert-experiments-debug/mcjjomjpjfaaaiieieaecenabgidlhid.
After it is installed and enabled, you will see a little convert icon in the toolbar (like the screenshot below)
Clicking on it will toggle the debugging on an off. When on, if you load a page that has Convert Experiences tracking code, just open the chrome console and you'll see many debugging messages. To open the console click Ctrl + Shift + "J".
The console will look like the image below. If you see the blue text in the console, then this will signal that Convert Experiences is installed on that site, and running correctly.
If you do not see any of this blue text, the tracking script is not installed or not running properly.
If you have installed the convert tracking code and you don't see the blue text on the console, contact support so they can look at it.