IMPORTANT MESSAGE: Issue with Google Tag Manager in Optin pages & Order Form Pages at this moment.
Please remove the code inside the pages and in Funnel Settings > change the path to the page and your page will continue to work. Be sure to test using an incognito window.
We do not have an ETA as to when this will be fixed, we will update when this is ready.
SOLUTION: https://www.cfpowerscripts.com/power-scripts/google-tag-manager
References:
Click Here to learn how to change the path: https://help.clickfunnels.com/hc/en-us/articles/360006195233-Funnel-URL-and-Pathnames
Click Here to learn how to do a unique test: https://help.clickfunnels.com/hc/en-us/articles/360006201854-Unique-Email-Testing