Order Invoice Email Not Sent

Installed this plugin, and set it to autocomplete all paid products, which works great. Made a test purchase, and checked the backend, which showed the order had completed successfully. However, the process did not trigger the Customer Invoice email. I still had to manually go into the order details and re-send the email in order for the customer and admin emails to trigger. (The account creation email was the only one that was sent automatically, but none of the order detail/confirmation/invoice emails).

Any suggestions?

PS. Using Stripe for payment

https://www.ads-software.com/plugins/woocommerce-autocomplete-order/