You will be able to upgrade your Yakkyofy Free subscription by following these steps:
1)  Click on the icon at the upper right corner of the screen.
2. Then select the “Subscriptions” option.
3. You will see this page, on which you can select two billing intervals: Monthly (30 days) and Annually (365 days), the second option will also allow you to save 25% of the subscription’s cost.
4. Then you should click on “Subscribe”.
5. On the following page you will be able to fill your credit card information and click on the highlighted button to pay the fee.