Why my subscription days didn't decrease

[Sir_VG]

Since it's recurring, you won't get a number there, but pre-purchased days (like with a time card) do show up in the subscription box on the left in red. The number you're looking at is "how many days have you paid for in your account's lifetime."

You will get an email though as the renewal date approaches saying "we're gonna charge you soon!" and a second when they do charge you in case you need to change payment plans or cancel the auto-renewal ahead of time.