Why can't I see the Subscription Check Box

I use recharge and a shopify flow theme. I am wanting to display the subscription check box so customers can confirm their subscription, however, I cannot seem to find how to add this checkbox.

I went to see if I could adjust the wording through the theme’s language editor.

  1. Shopify admin, go to Online Store > Themes.
  2. Click Actions > Edit languages on your current or live theme to open the language editor.
  3. Click the Checkout & system tab.
  4. Scroll down until you see Subscription agreement label and Subscription agreement label html

But there is no subscription agreement label there for me to modify.

@Alison_Bell
Hello,
Can You Please Share Your Store URL…

www.brothoflie.com.au or https://broth-of-life.myshopify.com/