Pre-authorized payment discount not active ?

Hi there,

I've been using Telus for a little bit more than 3 years now with 2 phone plans and 1 home service. Today, I learned about the pre-authorized payment discount that we can get on phone plans (and potentially on the home internet service too ?) and realized that I've never got it. 
I am paying my bills with the pre-authorized payment from a checking account (not from a credit card), and from the research that I did, it looks like my plan should benefit from that discount.

Does anybody know if the EPP Unlimited 25GB 5G is really eligible for that discount ? 
Is the PureFibre Internet 1.5G plan also eligible for that ?

Thanks in advance,
JC