I'll start off with system information and by saying I am by no means an expert on this so please excuse me being a novice. I have my default MTA to use PHP mail function but have my default mail to send email via SMTP (Don't know if this could be an issue). PHP Versions 7.08 which is included in my OS Ubuntu 16.04.3. Also Apache version 2.4.18. We have another system with osticket that works but upgrading to new system with more functionality. Whenever I open a new ticket I have it setup to send email to user with link to access their ticket if they wish to make any changes. On the ticket that is sent their is a link "view this ticket's progress online". When I click that link it sends me straight to the homepage whereas in the working system it goes into the ticket for user to make additional comments. I've compared the settings and checked everything I know to check but I'm at a stalemate from here. I've also tried emailing access link to see if that works and it does the same thing straight to homepage. I've checked the Apache logs and the osTicket logs and I see no errors when I open a new ticket or when I click the link to go to the ticket from my email.