@Matt_Kennedy
Automatic payment should have setup when you joined.
You can login My Account, then go to Payment > Manage Subscription and check if "Subscribed" is toggled on. If not, enable it
if you want to make load funds ahead of the renewal, after you login My Account, use this link to access the page for loading funds:
https://myaccount.publicmobile.ca/en/account/payment/funds/card
