Support Ticket Management System for WordPress

I noticed that when I input the shortcode into the email verification window inside of the EMAIL & IMAP SETTINGS tab

%ACTIVATIONLINK%, and then save the window when the page refreshes it is only showing TIVATIONLINK% , this happens EVERY time I try to amend this, thus when ever someone try’s to register and they await a link to confirm their email, the activation link does not show only this TIVATIONLINK% shows on their email thus they are unable to register.