Monthly plans renew automatically once every 30 days. The subscription can be canceled anytime with no penalties from your online account. Once you cancel the subscription you will no longer be charged.

You can renew your plan anytime, plus if you change your plan, any remaining balance will roll over for the next billing cycle (with the exception of Unlimited Plans - if available). Monthly plans are subject to certain Terms and Conditions.
The World Unlimited Plan covers a specific set of destinations, as described on the website. The destinations are subject to change at our sole discretion.