I already had this information for many of our customers on MailChimp, but there is no way to transfer this information to woocommerce easily, only manually and there are around 2.000 users that completed this field.

Hi! I recently purchased birthday add-one, but as far as we talked with support, they are saying that birthday field only comes up when you are a member. It does not make any sense because I should be able to capture that information at the initial sign up of the first time customer. How am I supposed to show this section to the customer if they have to be logged in?

Ability to run a workflow when a customer adds their birthday. This trigger should not run when the birthday is updated. Rather only when the birthday is add and was previously blank.