How to Upgrade from Free to Pro Plan
In order to upgrade from Free to Pro Plan, please remove the Smart Checklist Free add-on from the "Manage add-ons" Admin section and install Smart Checklist Pro from the Marketplace.
All your data i.e. created checklists or templates are safe and will not be removed. They are stored on your Jira instance.
☝🏼NOTE: Currently, there is no Free version of the Smart Checklist Forge app. If you uninstall or downgrade the Smart Checklist Pro (Forge) app in the future, any checklist data created or modified in Forge version of Smart Checklist will be lost due to Forge’s data storage model.
Detailed process
Go to "Apps" through Settings
Go to "Manage apps"
Find "Smart Checklist for Jira. Free"
Click "Uninstall"
Go to "Find new apps"
Type "Smart Checklist for Jira. Pro"
Install the newest version
You are all set!
Continue using Add-on with enhanced functionality!