Being a subscriber, you can remove the watermark and Ads, and that's the most convenient way you can use KineMaster. Monthly subscription and discounted annual subscription (approximately 50% discounted compared to monthly) are available. The prices depend on countries and will be shown in your local currency on the purchase screen.
Subscriptions can be purchased through the purchase screen which is found when you tap on the crown icon at KineMaster Home, 'Subscribe to KineMaster Premium' button at 'My Information' menu in Settings, or the trashcan icon next to the watermark on the editing screen. Additionally, the purchase screen shows up, when you launch KineMaster after the app update, and whenever you export projects.
Note: If you are facing an issue with your payment or have any inquiry about the payment methods, please contact Google Play or Apple (depending on the platform you downloaded KineMaster from).