Like any subscription, your plan renews on the expiration date. This lets you continue studying on Cambly with the same discount for as long as you like.
(This does not apply to "first month only" discounts.)
You can stop your plan from renewing right from your Account settings any time before it expires. Just click [DEACTIVATE SUBSCRIPTION].
Don't worry, you'll be able to finish your current plan. However, any discounts you used before will not work anymore.
If your plan has already renewed, please submit a request.