Thank you for your reply Liam. I really copy-pasted the code from the tutorial so I really don’t think this is the reason.
If I am correct a custom template section can’t be added via an SHopify app correct ? I am new with Shopify so sorry if this is the case. I would like this button to be create via an app as I would like all the Shopify websites owner to be able to use the tool I am working on without having to code.
How do I know if I have the Shopify Starter plan ?