Visit the official store page at Ezisolution Systems and purchase either a Full License or an Upgrade Key based on your version.
If you already own a license but want to move to a newer version (e.g., from 2.7.28 to 2.7.75), you may need an upgrade key:
Visit the official store page at Ezisolution Systems and purchase either a Full License or an Upgrade Key based on your version.
If you already own a license but want to move to a newer version (e.g., from 2.7.28 to 2.7.75), you may need an upgrade key: retail man pos 27 28 product key