Sign out of Element 15 Mac

[#1]

I have bought a new Mac and Elements will not start up.  I am asuumed it is because I didn't sign out of Elements on my old computer so I started up my out computer and started Elements, went to Help and clicked on Sign Out (Fred.Cawsey@sasktel.net) and nothing happens.  What is the solution to this problem.

Thanks for any help you can give me

Fred

[#2]

I have bought a new Mac and Elements will not start up.  I am asuumed it is because I didn't sign out of Elements on my old computer so I started up my out computer and started Elements, went to Help and clicked on Sign Out (Fred.Cawsey@sasktel.net) and nothing happens.  What is the solution to this problem.

Thanks for any help you can give me

Fred