At the end of the free trial, you will typically be automatically switched to a paid plan unless you cancel before the trial expires. If you decide not to continue with the paid plan, you can either cancel the subscription by downgrading to the free plan to avoid being charged.
Yes, you can switch between paid plans. The change takes effect immediately, and you may be charged the difference.
Yes, you can downgrade to the free plan if you're currently on a paid plan. However, you need to complete the downgrade before the next billing cycle to avoid being charged.
The app will stop functioning and not affect your store if uninstalled.