Step 1. Access your Billing page
Step 2. On the Billing page, you’ll have to select the option "Show annual plans" YES
Step 3. Now you’re going to see this page showing all the annual plans
You can switch from a monthly plan to an annual plan by clicking on the “Change plan” button
Final Step. After clicking on “Change Plan” you’re going to see a message saying:
“Are you sure you want to change your plan?”
Click on the “Yes, change it!” button to conclude.