Adding Existing License to Adobe

If you can log into your Adobe account, you should be able to get to your list of activated devices, as shown in the screen capture of the menu bar from my account page below:

1- Adobe Account Devices.jpg

From there, you can see the devices registered to your account. Don't be surprised if, as shown below, you have multiple instances of the same device shown in the list. If you want to de-activate a device, simply click the de-activation button to the right of the instance(s) of that device in the list.

1a- Adobe Account Devices Listed.jpg

That's the good news: it's easy to de-activate a device in your Adobe account. The bad news is, if you do that with your Acrobat 2015 install, you won't be able to load it onto a new device as the activation servers for that software were shut down long ago, rendering new installs of Adobe Acrobat 2015 unusable.

Wish I had better news for you,

Randy