The Gauntlet Mini™ / Trader Career Path® subscription will be billed 30 days after purchase.
Keep in mind that a reminder email is sent to your mailbox 3 days prior to your upcoming charge.
Apart from that, you can check the date of your next billing in your E2T dashboard.
If the subscription is not successfully charged after the third attempt, your account will be irrevocably canceled.
In case you are having an issue with your current payment method and you decide to switch it, here are the steps.