1. Log into your Whitespark account - https://accounts.whitespark.ca/sign-in
2. Click Change Subscription / Cancel / Receipts under Local Citation Finder
3. To change your payment method, click on Update Credit Card Info, and enter your details.
To change your subscription, select the plan and billing frequency (monthly vs. yearly) from the drop down menus, and click Change My Subscription to save. If you're upgrading from the free plan, you'll also need to enter payment details.