You're welcome to upgrade a Kudoboard at any time, simply follow these steps:
1. When viewing the board, click Settings on the upper left-hand side of the board.
2. At the top of the dropdown menu, click "Upgrade Board".
You'll be directed to a new page where you can select your desired upgrade option and pay. Once purchased, you will have immediate access to board features. Any changes made to the board previously will be saved.
Please note that this upgrade will apply only to this individual board. If you want to purchase an ongoing plan, check out either Premium Packages (bundle of boards for individual creators) or Business/Pro/Enterprise plans (unlimited boards, multiple creators, and all the extra bells & whistles).