I use a lot the automated newsletter. On the Woocommerce bloc, we can choose the article we want to use on the newsletter. It is not possible for the Custom Post bloc (we can only use filter). For the future, can you add that ? It should be more flexible.
if you have a valid license and need to ask anything about the pro addon, please open a ticket from your account area, thank you. Anyway yes, that’s the way it is at the moment, I’ve added your feedback to our user requests list.