Hello @PoW8
This is Amelia at PageFly - Shopify Advanced Page Builder app.
You can try the following steps I have provided to help you solve the problem you are facing:
Step 1: Online Stores > Themes > Edit code
Step 2: Choose file theme.liquid
Step 3: Add code above the tag
Hoping my solution helps you solve your problem.
Best regards,
Amelia | PageFly