Backup your Joomla site using tools like Akeeba Backup before installation.
If you have JTicketing and JGive on the same site, please don't upgrade to this version. We will do compatibility release soon for this.
Upgrade Path(If upgrading from versions older than v2.1.0):
Install JTicketing 1.8.x Install JTicketing 1.9.x Install JTicketing 2.0 - To upgrade to this version, need to click on JTicketing Dashboard - Migrate-Data (For TJVendor and image migration) Install JTicketing 2.1 - For Notification templates Install JTicketing 2.3.1