Disconnect FPP serial key with an account wich I don't know.

Company bought Acrobat DC few months ago for the new employee.

Since He quit the company, I(support team) deleted Acrobat DC which installed in his PC so I want to use it.

I deleted Acrobat 9 and installed Acrobat DC. All functions work fine except saving.

All I can see is blank space.

Plus he connected this serial, belonging to company's Intangible assets, with his account and I can't figure it out.

What can i do?