1
Go to dashboard.stripe.com and sign in.
2
Click Developers in the top navigation bar.
3
Click API Keys in the left sidebar.
4
Make sure the toggle in the top right says Live — not Test.
5
Under Standard Keys, find "Secret key" and click Reveal live key.
6
Copy the key — it starts with sk_live_ — and paste it into the Secret Key field in Settings.
⚠️ Never share your Secret Key. It gives full access to your Stripe account.