If you have a monthly subscription and want to change it to a yearly subscription, you can do so via your customer portal:

• • You can upgrade your subscription anytime! You will need to go to the Customer Portal to upgrade.
  • Enter your email address and select "Continue"
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  • A one-time password will be sent to your email address. Enter the One-time password into the respected field and select "Login"
  • 
  • Once in the Customer Portal, select your Membership plan. 
  • 
  • Click on "Edit Subscription"
  • 
  • Select "Change"
  • 
  • Click on the plan you wish to upgrade or downgrade to, then click "Update"
  • 

You will be charged the new rate on the next monthly billing cycle for your account.