How to Redeem Your Code (ChatGPT Plus / Pro / Go)

Every ChatGPT membership we sell is delivered as a redemption code. You activate it yourself on the redemption site https://cdk.bar/ — it usually takes under 5 minutes.

Before you start

• A computer with Chrome or Edge (getting the session has to be done on a computer)
• The ChatGPT account you want to upgrade is signed in on that browser
• Plus / Pro: the account has never had a subscription, or the previous one expired at least 10 minutes ago. Go: the account has no active paid subscription

Step 1: Verify the code

Open https://cdk.bar/, go to "Redeem", paste the code from your order and click verify. Verifying and the pre-check never use up the code.

Step 2: Copy your session

In the browser where you're signed in to ChatGPT, open a new tab and go to https://chatgpt.com/api/auth/session. You'll see a long block of JSON. Press Ctrl + A to select all, then Ctrl + C to copy.

Note: copy the entire JSON (it contains the sessionToken). The accessToken alone won't work.

Step 3: Paste and check the email

Back on the redemption site, paste the whole JSON. The page shows the account email it detected — make sure it's the account you want to upgrade, then click "Confirm".

Step 4: Check the result

Processing runs automatically. You can enter the code under "Code lookup" on the redemption site to see the result and which email it was applied to.

Step 5: Confirm it's active

Refresh ChatGPT — once the plan badge appears, you're done. We recommend going to ChatGPT Settings → Security and choosing "Log out of all devices" so the session you submitted is invalidated, then signing in again.

Renewals with card binding (Pro 20x renewal)

• Only for accounts whose current plan is still Pro 20x. If it has already expired, buy a Pro 20x monthly code instead
• The steps are the same as above; follow the prompts on the redemption site to bind the card
• After binding, contact support to confirm (WeChat jzb0219) and keep your contact details reachable

Troubleshooting

• Pre-check failed: usually the account still has an active subscription, or the old one expired less than 10 minutes ago. Wait a bit and try again — the code is not used up
• Session invalid or expired: sign in to ChatGPT again and copy the full JSON again (it must include sessionToken; accessToken alone won't work)
• Phone or security verification pops up: this is OpenAI's own account risk check, unrelated to the subscription — you'll need to complete it yourself
• Any other error: note the code and the message, then contact support with your order number. Please don't retry with a different code

Still stuck? Add our WeChat jzb0219 with your order number.