Here is how to upgrade or change your existing price plan:
1. Select the "Plans and Upgrades" option from the Account Settings.
2. Then, select a new price plan that suits your needs (Dreamer, Founder, or Team Pro). Apart from that selection, you can choose if you want to be charged monthly or annually, and also you can select the number of ideas and collaborators that will be included in your plan.
3. When you select a plan, you will get the information about your new plan, the difference you need to pay for the upgrade, the new rate, and the next billing date.