To change subscription terms (for example, switching from 1 month to 6 months), you must first disable automatic renewal of the current plan and then sign up for a new one after the paid period expires.

Google Play

1. Open Google Play and tap your account icon in the top-right corner of the screen.
2. Go to Payments & Subscriptions → Subscriptions.
3. Select NumBuster and tap Cancel Subscription.
4. If Google suggests pausing the subscription, tap No and confirm by tapping Cancel Subscription button.
5. After the current plan expires, go to the Paid Features section and subscribe for the desired period.

AppGallery

1. Open AppGallery and go to your profile.
2. Go to Payments and Purchases → Subscriptions.
3. Select NumBuster and tap Cancel Subscription.
4. Once the subscription is no longer active, re-subscribe with the new period in the Paid Features section.

WEB Dashboard

1. Open app.numbuster.com in your browser and authorize with your account.
2. Go to Paid Features (wallet icon).
3. Click the Disable Renewal button. If the Payment Management button appears instead, click it and select Cancel Plan.
4. After the current plan expires, sign up for a new subscription in the Paid Features section.

Important: If you currently have an active paid period, there is no need to start a new subscription immediately. Wait until the current term ends before changing the type or period.