This is how you can Purchase / Modify your plan:
1. Open the Profile name drop down from the top Navigation bar.
2. Select Subscription & Billing.
3. Press Update Plan.
4. Press Activate/Upgrade tab for the plan suitable for you.
If the updated subscription amount is higher then your current plan then we will automatically charge your added card. If it is less then the current plan then you will get credits of the difference. You will see the specific details on confirmation screen.
If you have any queries, please contact firstname.lastname@example.org.