You can always check if you have an active subscription by logging into gaiagps.com and checking your subscriptions page:
If you are looking to Cancel an existing Subscription, follow the steps in this article:
Note: A free trial subscription will not automatically renew, and you will not be charged.
You can request that your Gaia GPS account be deleted by sending an email to firstname.lastname@example.org.
Deleting your account will delete all of your data on gaiagps.com and in the app. Deleting your account is not a necessary step in canceling a subscription.
Note: Deleting your account will not cancel any existing subscriptions.