I have just created a meta field with the name Match product (The goal is that I want to display products that match the product the visitor is currently viewing, located above the add to cart button).
When I edited the customized theme, I tried adding a new block but the block from the meta file did not appear.
Then I tried using dynamic data and no data appeared.
I feel very frustrated
Then I installed an app called "Search & discovery" where this app has the same function as what I wanted, namely "Complimentary product".
Strangely, this app block also doesn't appear on the theme customization page. For the record, other applications can still appear.
It sounds like you'll need to connect directly with Shopify support to assist you in setting up either your metafields or the Search & discovery - you can start an interaction here: https://help.shopify.com/en/support/topic-select/login-issue/contact/chat
Hope this helps,
Thank you for the answer.
I already send them a message about this issue.
They gave me advice to hire a developer even though I didn't have the budget for that. They also directed me to go to the community