If you have an iOS device:
Open the settings of your device.
Tap your name, then tap Subscriptions.
Tap the name of the subscription that you want to change.
Tap See All Plans, then follow the onscreen instructions to complete your purchase.
If you have an Android device:
If you got the app from the Google Play Store:
Open the Google Play app. Make sure you’re signed in to the correct Google Account.
Find and open Instories.
Tap Manage subscription.
Select the new plan you want to change to.
Select a supported payment method.
Tap Buy or Subscribe.
If you got the app from the AppGallery:
Please contact AppGallery support: https://consumer.huawei.com/ph/support/contact-us/
If you bought your subscription on the website https://instories.com/:
It's not possible to change your payment plan in your account now. Please contact our support team if you need this. We'd be happy to help you!