While our subscriptions are not stackable, the system will pro-rate your subscription and whatever balance you had with the previous one will be applied towards the new. This is a normal process when our exisiting customers go through the pricing page and add on to an existing subscription.
If your subscription ends in February and you purchase an annual today with the current special, you will have 1 year from today - at a prorated special rate. Your one year won’t start in February, but will start now. However, you will not ever be double-billed and you will get to take advantage of the special pricing.
I hope this sorts it out for you. If you have more questions, or want me to do a caclulation for you, you may contact me at email@example.com.
Thank you for your continued dedication to ChinesePod!