To find your Shopify plan edition, you can:
  1. Go to your Shopify admin
  2. Select Settings
  3. Select Plan 
On this page, you can see: Your current plan, When your next billing date is, How much your plan costs, and The option to add or update a payment method. 
You can also manage your Shopify subscription plan, store type, and store status from the Settings page. 
You can change your plan by:
  1. Logging into your Shopify account
  2. Clicking Settings
  3. Clicking Plan
  4. Clicking Change plan
  5. Selecting a new plan
  6. Choosing whether to pay monthly or yearly
  7. Clicking Confirm billing cycle 
You can find more information about Shopify plans, features, and costs on the pricing page.