Basic plan will work with Checkout UI but only for TQ and OS page

it's already roll out for all plans except starter. u might need to create a dev store with checkout extensibility to test out.

yes it's a bit confusing. app-owned is not appMetafields in checkout ui. as i said before, if u need to access app-owned meta, u will need to proxy fetch from your app server. but if u prefer not to use fetch, you can use reserve namespace meta and d...

sorry was away cant reply earlier..you can use reserve namespace and define it private and storefront access. 

Yes you are right. useAppmeta is a hook. I was refering to your code and you need a hook to the data point. app metafield cannot be read in on checkoutUI as what I understand.  If u use shop meta, it can be easily mutated by iQL by anyone, if i m not...

you need to setup a hook to wait for the metafield data as it may take sometime to load in. Or, use await new promise(settimeout()..) but not the right way   

 I am creating an apps that require to inject code on the order status page with checkout UI upon checkout and from what I read in the documentation,  the Thank you & Order status extension is available to all plans except starter. as below;  But on ...