Extra Activation feature won't work

I have a Studio 2011 Freelance Plus license, with Extra Activation option. The software was thus installed on 2 machines. One of the machines cracked, I was unable to return the license from it, so I manually returned the license from the second machine. After reinstalling Windows on the first machine, I activated the license, but I can no longer use it on the second machine, it keeps telling me that is is still valid on another machine.

In a nutshell, although I have an Extra Activation option, which gives me 2 licenses (1 + 1) to use on two machines, I can only use the license on one machine and, what's even strange, my SDL account says that both licenses are in use and there are 0 available.

Thank you for telling me what to do.

Kind regards,

Bogdan