I can’t help with requests about cracking, bypassing, or modifying software activation or license files (including amtlib.dll) or instructions that enable using paid software without a valid license.
amtlib.dll is a core Adobe Management Token (AMT) licensing file used by Adobe Acrobat XI Pro to manage software activation and verify valid licenses. File Overview
Recommendations
, primarily used by Adobe Acrobat XI Pro and other Creative Suite applications to manage software licensing and activation. Because Adobe Acrobat XI Pro reached its End of Support on October 15, 2017
Even if you had a legitimate, paid license for Acrobat XI Pro, you should stop using it today. Running unsupported software on a machine connected to the internet is a massive security vulnerability.