Activation of DraftSight Pro on new computer.

I am trying to install Draft Sight on a new computer. The mother board crashed on my previous one. We are unable to restart it to deactivate the program.

How do we proceed to activate the program on the new computer?

Your cleverbridge reference number: *****8335

Thank you for purchasing DraftSight Professional.
Please find enclosed your serial number for:
DraftSight Professional

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