Can't add group with emails ending

I just try to add a new group with a different kinds of emails ending in,and it seems new kinds emails can’t recieved email with code at all. I see the account page with a yellow note that having some issue ,is that related or just my own experience.

Are you getting an error message with inviting users?

Are you following the guide below?

https://developers.cloudflare.com/fundamentals/setup/manage-members/manage/#add-account-members