You can easily deactivate the automatic license renewal of your subscription by logging in to your Avira Connect account. Your Avira account is a convenient way for you to easily manage all your licenses, payments and subscriptions. You can login by entering the email address you used during the checkout process, as well as its respective password.
In case you’ve forgotten your password, you can request that a new one be sent to your email address by clicking on the “Forgot your Password?” option on that same page.
Once you’ve logged in to your account, please click on the “Subscriptions” option displayed in the navigation bar located on the left side of the dashboard. Lastly, turn Off the subscription button of the desired product to disable the automatic renewal.
You’ll find an illustrated tutorial of the deactivation process here.