You can change from monthly to yearly plan any time, but if you want to change from yearly to monthly plan, you have to downgrade your current plan and wait until it comes to the end, and then you can subscribe to a monthly plan.
You can change from monthly to yearly plan any time, but if you want to change from yearly to monthly plan, you have to downgrade your current plan and wait until it comes to the end, and then you can subscribe to a monthly plan.