Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

I have a toad powerkey immobiliser. Bought two new key fobs now cannot get them to link. It takes the first but not the second. Any pointers?

Update solved. The chip in the ignition key was interfering with the powerkey. Simple. Take the Imobiliser chip out the ignition key for the pairing operation. Worked first time