eBay is not an approved re-seller of the Zubie product. Per Zubie's terms and conditions we do not support the reselling of Zubie devices.
The activation code is tied to the device and provided when purchase directly from Zubie or an authorized re-seller. Zubie will not re-issue any activation codes for device purchased on eBay.
If you find yourself in the situation with no activation code, please contact the eBay seller for a refund of your purchase.