Hello Dear Amanda,
I have already contact my web host and everything works well, I even double check it from my SMTP pluging in WordPress, where it shows me that all mails are delivered correctly
The strange is that I add 2 emails in my WooCommerce notification email as you can see in the screenshot -> https://nimb.ws/VmuvhA , but few of them are delivered in the first email and the rest to the second, meaning something from WooCommerce conflicts the forwarding fuction of notification emails, this happens after the last update of WooCommerce, do you prefer to send you an admin logins where you can double check it also ?
Thank you