The SIM should come preactivated. If you plan on cancelling you need to call in or port that Koodo number to another carrier like Bell which will auto cancel (no need to call). As for getting charged your monthly plan what does it say in self serve? Think actual service starts as your order ships out. But not sure.
Koodo $29 plan with Google Pixel 2 XL, $50 credits ongoing
EBox $42, group buy $2 off
Thanks to RFD