You can reactivate your subscription any time until your billing term ends by using your account page. All you need to do is to click on
reactivate button on the account page and approve the action.
Step 1: Click on
Reactivate Subscription button.
Step 2: Read "rules & the terms of service", set the checkbox checked and click on
Reactivate my Subscription button
Once the subscription reactivated, the payment system will continue to bill you as usual for each billing term.