welcome email doesn’t work

HI, I tried using the welcome email feature but it doesn’t work. We have an e-commerce built with Woocommerce and we want new subscribers to the store to receive a welcome email with a discount code. We followed all the required steps:
– the license key has been entered and validated;
– the account has been activated regularly;
– the DNS records to validate the domain have been inserted and work regularly;
– we have set the “MailPoet Sending Service” as the sending method which is active and functioning;
– we sent test emails and they all arrive regularly.

When we created the welcome email we activated it for all new customers who sign up as customers of the store.

When a customer signs up to our shop he appears to be registered on mailpoet, but it is not confirmed. The confirmation email is not sent and therefore the customer always remains unconfirmed. We manually sent the confirmation request and that’s how it works and the customer is listed as “subscribed”. But the welcome email always remains in the queue and is never sent.
what did we do wrong? Thank you