When customer replied to an existing ticket, the system creates a new ticket instead of set as a reply to the ticket.
For example, if a customer sent ticket with subject "Need Help" and after he replied to the same ticket but Fresh desk creates another ticket with subject "RE: 2335] Need Help"
I read the article about this issue here https://support.freshdesk.com/support/solutions/articles/226802-why-is-a-customer-s-reply-to-a-ticket-creating-a-new-ticket-email-threading-
But I didn't find any problem on our Fresh desk. Could you please help me to resolve this issue?