suddenly, our shop stop sending processing notification emails to customer and department both.
A, G, O, I status emails are sending, but not P status.
however, when i click “notify customer” after i got the order at admin panel, it is sending the mails to customer and department.
PS: i changed my fn.functions.php with the orijinal one, but it didn't work.
PS: also i tried both sending methots, php emailer and smtp.
Can you please help me about this issue?
i fixed the issue :
i remove (P) Processing Status line, and add again with P status.
working like a charm.