If you have an annual subscription and want to change it to a monthly 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"
• 
• 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 billing cycle for your account.