I have found that when I install adobe acrobat 2017 for several different users/pc's using the same Adobe Acrobat login, mine, that the signature function is affected by this and shows everyones signature to everyone else when they go to sign a docum

I have found that when I install adobe acrobat 2017 for several different users/pc's using the same Adobe Acrobat login, mine, that the signature function is affected by this and shows everyones signature to everyone else when they go to sign a document.  Please let me know if I have to un-install each of these 13 licenses, then create 13 users and then re-install using these 13 different user to correct his issue.  WHY DOESN'T IT USE THE LICENSE NUMBER TO SEPARATE THESE?