my new postal code sucks

In November we got a new postal code to go with our new postal drop boxes.

I love getting my mail delivered practically to my door, I really really do, but the new postal code seems to be an invalid code for damn near everything online.

When I go to Canadian tire dot com, they ask for your postal code so that you can see the store stocked nearest to you. But my new postal code doesn't exist to them. I have to use my old one.

While it is not that inconvenient, what happens if the mail delivery system itself decides my postal code is B0rked? Will I still get my mail?

Im going to contact Canada Post and ask them whats up.