Testing emails are sent out successfully, but invitation emails are never sent out

[jiayouwyhit]

Finally, I figure it out by myself.

Here is the solution:

After restore, sending email invites don't work

Can you check that the setting disable email is set to no (it is set to yes or non-staff after an import). If you hid the alert banners via css, you may not know that after an import the emails sent with discourse are blocked until you act on it.