License after a systemcrash??

Ju just downloaded EM client, due to a crash of my computer. All is running now BUT EM-client is offline and asks for a licensencenumber. I dont understand, I have used this program for 1 year and was very happy with this, And now, all of a sudden, after a systemcrash I had to reinstall EM-client again and now I need to have a licensenumber??? Who can help me with this problem?

Go to:

and follow directions.