Here is a short and easy step by step explanation on How to Purchase higher tier In App
Step 1: Click the ‘Settings’ icon located on the bottom right corner of the home screen.
Step 2: Click ‘Upgrade’. After that, choose ‘Standard’ or ‘Premium’ depends on your needs (features that you will get are listed under each package name)
Bellow is the pricing page. You can choose any tier that fits your needs.
Note: Click on ‘My account’ to change your password, ‘support’ to send a message about any enquiries or questions and ‘Unregister device’ to log out. More (how to change setting)?