how can i remove licences from machines i no longer use ???2 licences are on old machines ..is it possible ??

Before selling or giving away an old machine, you only have to ensure that no one else will be able to run your license, by uninstalling or unregistering the software.

If you are referring to the computer count shown when running the Sonic Charge Authenticator, then no. This will count all computers you have authorized on, not just active ones. Under normal use you will not hit a limit. Our system will monitor excessive installations that could be a shared or stolen license that is in violation of the license terms.

I have a problem, currently I have it installed in one computer but since I had to reformat it cause it was not running properly I have installed again the plugins but the count of computers is 2, how could I solve this? If it happens again in the future I will not be able to install it again I guess, but the other copy / installation is no longer in use of course, cause it is lost there in a virtual empty space.

Per Fredrik's post above yours, it doesn't matter. The count in the authenticator includes old authorizations that may not be used anymore.So you personally could install it again for your own personal use, so long as you comply with the license terms.