...
5) If you clicked on “Forgot password?” you will see the forgot password box below. Just enter the Adobe ID email address associated with your Acrobat Pro DC license (your LBL email address) and click the blue “Next” button and follow the instructions.
IF FOR SOME REASON THE STEPS ABOVE DON’T WORK OR DO NOT COVER WHAT YOU ARE SEEING, TRY THE WORKAROUND BELOW:
1) Click on https://www.adobe.com/ or type it into your browser.
...
If you are still experiencing difficulties after completing these steps, please submit a ticket here [email protected]please Request Help.