Hello @taurul,
Is this a new install for you? If it’s a brand new install, it would be ideal to re-install since you may have missed adding your menu links to the menu. (The installer does this for you with a prompt). Otherwise, you can manually add links to the “my tickets” and “submit ticket” pages. Look in your pages list to find the pages that you have set up to both submit ticket and list your tickets. You can manually setup menu items to link to those pages. If those pages don’t exist, it may be because of an interrupted install. If the install was interrupted, then it is ideal to re-install.
I’ll mark this thread as resolved, based on the information to troubleshoot above. But should you have any follow up questions, I will be happy to follow-on with more help.