How do I cancel my NASCAR MOBILE auto-renewable subscription on my computer?

Manage and Update your Apps: https://support.google.com/googleplay/answer/7018481?co=GENIE.Platform%3DDesktop&hl=en&oco=0

 

Cancel A Subscription

Uninstalling the app will not cancel your subscription.

  1. Go to play.google.com.
  2. Check if you’re signed in to the correct Google Account.
  3. On the left, click My subscriptions.
  4. Select the subscription you want to cancel.
  5. Click Manage and then Cancel Subscription.

 

Also, note that canceling a subscription will stop the recurring fee moving forward, and you will have access to the content until your last payment expires.
Important: Uninstalling the app will not automatically stop your subscription - you must actively cancel the subscription using the process described here. If you uninstall the app but don't cancel your subscription first, you will still be charged.

Cancelling a subscription will not retroactively refund subscription payments, and previously charged subscription fees cannot be pro-rated based on cancellation date. For example, if you purchased a one-year subscription on Jan. 1 for $29.99 and decide to cancel your subscription on July 1, you will have access to the subscription until Dec. 31 and will be charged the full $29.99, but you will not be charged another yearly subscription of $29.99 the following Jan. 1.

Google Play Terms of Service
https://play.google.com/intl/en_us/about/play-terms.html