I just bought and installed Acrobat XI Pro and wanted to register it. I got a message that my serial key has been used for more than the required number of systems

[ajamsunnie]

I just bought and installed Acrobat XI Pro and wanted to register it. I got a message that my serial key has been used for more than the required number of systems

[kglad]

using a browser that allows popups and cookies, contact adobe support during pst business hours by clicking here and, when available, click 'still need help', https://helpx.adobe.com/contact.html and request an activation count reset.

[Test Screen Name]

You were almost certainly scammed. Adobe no longer sell the obsolete Acrobat XI but pirates do. Get a refund.