The customer metafield is not updated in the order confirmation template

[marfape]

Hi,

I added customer metafield in order confirmation template, this value is updated through the app extension, after post purchase I saved this value in metafield, and the email confirmation is sent. The problem is that the first time the value appears correctly in the email, but in future purchases the value is kept in the email, even though it was changed by the app.

I don't understand what is happening, is like this value was cached.

I'm new to shopify, I would appreciate your help.