I can create Jira project issues using + but have no Create button on top bar - Why?

[kdickason]

We are currently using a 30-day trial license of Jira version 8.17.1.  We upgraded from an older version, and have disabled all user-installed plug-ins.  I am a System Admin and I have made sure I have permission to Create Issues on projects.  I can do so using the + Create issue button on the bottom-left of the screen from within a project.  However, in a previous Jira version, we had a Create button in the menu bar at the top of the screen.  This button no longer displays.  How do I get it back?   Is this possibly an issue because we are using a 30-day trial license not a full license?  There are no errors in the log indicating an issue that would prevent this button from displaying.  Please help!