Will my subscription renew automatically?

No. A subscription to a creator profile covers the months you paid for and ends on its end date; it does not renew by itself. We let you know three days before it ends (in the app and by email), and you can renew from the creator's profile, from your Vault or from the post menu: the new period is added to the end of the current one, so you lose nothing. The free trial is the only automatic charge: unless you cancel before it ends, the saved card is charged once when it does.