Account numbers to use / configure Purolator shipping method correctly error

Hi!

First of all, thanks so much for sharing this module. Great job!

Now, I have a few questions. I am trying to integrate your purolator module into an ecommerce theme.
I followed the set up instructions for the purolator module, I set up the weight field etc, I signed up for my purolator developer key which I received...

Development Key: (my key)
Development Key Password: (my pass)
Test Account Number: 9999999999

Now when I am trying to add the key I run into two issues that I would like to ask about.

../admin/commerce/config/shipping/methods/Purolator/edit

the fields that I am asked to completed are :

Registerd Account ID *
Billing Account ID *
Access Key *
Password

I assume that the Access Key is the developer key and password is the dev password.
I am not sure whehter I put the test account number ("9999999999") in the Registerd Account ID * and Billing Account ID * fields.

if so, I get the following error message:

No services received from Purolator for country code CA and province/state BC.Please configure Purolator shipping method correctly.
1100213 Postal Code is invalid.

I have no clue where the "1100213" coming from and how to resolve this issue.

Any tips would be greatly appreciated!

Thank you very much. :)