View your current subscription plan and upgrade or downgrade your plan on the Manage Subscriptions page.
Your current plan is highlighted.
Upgrade or Downgrade Your Plan:
Click on the Upgrade or Downgrade button for the plan to which you wish to switch. You will be taken to Shopify where you can modify your plan.
Check for invoices:
Since we have complied with the Shopify Billing API, you can see your invoices directly from your Shopify app store.
Learn more about Shopify's App charges in the Shopify Help Center.