Why GTM preview is not connected?

When you are facing the issue that GTM preview mode is unconnected, like the screenshot below:

1. Check if Zalify Pixels is installed

2. Check the GTM source code is normally loaded

Open a new tab and enter https://www.googletagmanager.com/gtm.js?id=GTM-PRCT47D for testing purposes.

If you can see the code loaded, then you do not have this issue.

Else, you might be seeing an error page saying that net::ERR_SSL_PROTOCOL_ERROR, please check your network or firewall.

Reference: https://support.google.com/tagmanager/thread/108989811/gtm-can-t-connect-to-https-www-googletagmanager-com-gtm-js-id-gtm-xx-net-err-ssl-protocol-error?hl=en

3. Check your GTM connector

4. Check the Shopify Store URL is correctly entered in GTM preview mode.

5. Clean your Chrome browsing data

Then close the browser and re-open.

Install Zalify from Shopify App Store