Australian Car Repair Issues? Ask an Auto Mechanic for Answers ASAP
I find the fibreglass packing tape the best for your car, down past the rear edge of the front door seal to grip the door lock knob.
Then you'll need to get some keys cut and programmed.
Do you have the immobiliser security code (printed on the Opel Pass card when vehicle was new)?
Hope you get your new keys programmed now, and then you'll be ok.
Glad to help.