Click on your profile button located on the upper right. It has the first letter of your Last Name.
Click on Account Settings.
Now that you’ve entered your Account Settings, you’ll find on the bottom right the “Change my plan” button, click on it.
Be sure to press the Yearly button at the top. You can now decide on either changing to the Basic or Pro Yearly plan. The price that you paid for the monthly subscription will be deducted.
Click on “Change plan” to finalize your action.
Your plan has now been modified.