Click the three-dot menu next to your username at the bottom left of the app and choose manage subscription. The subscription screen shows your current plan, the renewal date, and the amount of the next charge.
Your payment receipts are also emailed to the address you signed up with, so your most recent receipt is a second place to confirm what you paid and when the subscription started.
If the renewal date or amount shown does not match what you expect you can email support@geckoedge.ai to get more information.