First things first. Why would you go back to old boring presentations after being in Slidebean?! Just kidding. We understand different situations, and we're here to help at all times.
In order to cancel your subscription plan, just click on your name, down on the left panel of your screen. There, go to Subscription.
A window will pop up for you to please choose a reason for the cancellation, and if you have a minute, leave any comments you have.
The plan will remain active until the end of the current period, and be automatically canceled by the corresponding date. You can return when needed, just keep in mind inactive accounts may be set for deletion.