Step 1: Add Pixel to Theme
Login to your store's administrative panel and navigate to Settings > Customer events > Add custom Pixel and enter "Mantis" as the pixel name.
Step 2. Paste the Shopify Pixel
In the Mantis administrative panel, navigate to Conversions > Pixel Code and copy the snippet found under the Are you using Shopify? section then paste into the Code box inside Shopify.
With the code pasted, click the Save button at the top.
After saving, the Connect button will enable and you will need to click again.
After you have connected the pixel, head back to the Customer events screen and confirm that the status of Mantis shows as "connected".