If the software is installed, the license file is typically stored in C:\ProgramData\ABBYY\FineReader\15\Licenses (this folder may be hidden).
You can buy a subscription or perpetual license directly from the ABBYY Store or authorized resellers. If the software is installed, the license file
Search your inbox for "2Checkout," "Verifone," or the name of the reseller you used. If the software is installed