How To Activate a Licence After a Computer Crash.

Hello,

I have a SDL Trados Studio 2015 Freelance Plus licence.

I had a first computer crash a few days ago and lost the licence on this computer so I used the second licence available.

Yesterday my computer crashed again and I lost that second licence and I have no more licences available.

Could you please tell me how to get my licences back and activate them?

Many thanks in advance.

Gwen