I need to find out how to unregistered my license key from a computer to add to another as I work from home and office

Dear valued customer,

In this guide below, you will find:
Transfer ezCheckPrinting Version 8 license (for Windows)
Transfer ezCheckPrinting Version 7, 6, 5 license (for Windows)
Transfer ezCheckPrinting license for Mac
License issue and solution

https://www.halfpricesof...heckprinting_license.asp 

You can purchase upgrades for multi user by contacting us. We will issue a link for the cost difference of the purchase already made.

Thank you

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