Quickly update your billing info on TrainHeroic from your account's billing page. Here is how...
First, Login to your account here. Keep in mind that you will need to be logged in to your account from the web and not from the app. Billing information, updates, and purchases all happen from TrainHeroic's web interface and not the app.
Use the navigation bar (3 horizontal lines) in the top left hand corner to open your Options.
Click the Settings icon at the very bottom. It looks like a gear shift.
Once in your Settings, click the tab labeled Billing.
Update your card info.
Last, be sure to select which card you'd like to be your default card going forward. The default card will have a green check next to it, just click on the other card to switch the default card.
I hope this is helpful. And, our team is always here if we can be helpful in any way, so please don't hesitate to reach out. Email us at firstname.lastname@example.org if you have billing questions, or any other questions for our team.