ShiftNav Lite and ShiftNav Pro share a common codebase, but are two independent plugins. You will only have one activated at a time.
Installing ShiftNav Pro
When you purchase ShiftNav Pro, you’ll receive a zip file to download. You can also re-download it via your Dashboard.
Download the zip file, then in your WordPress admin, navigate to Plugins > Add New
Then click Upload Plugin
Choose the ShiftNav Pro zip file, and click Install Now
Let the installation complete, and then click Activate Plugin
If you have ShiftNav Lite installed, ShiftNav Pro will attempt to disable it automatically.
Check that the Lite plugin has been disabled
If you were previously running ShiftNav Lite, double check that the ShiftNav – Responsive Mobile Menu plugin is disabled and only ShiftNav Pro – Responsive Mobile Menu is enabled. Leaving both active may cause errors.
Automatic Settings Transfer
Any ShiftNav Lite settings will automatically be inherited by the ShiftNav Pro plugin. There is no need to do any settings migration when upgrading to ShiftNav Pro
ShiftNav Pro Settings
ShiftNav Pro adds new Menu Item Settings, Advanced Content Fields, Secondary Instances, Customizer Settings, and more!