1. Go to chatgpt.com → Log in to your ChatGPT account.
2. Open the link: chatgpt.com/api/auth/session
    – Wait for the page to load → Press Ctrl + A (or Cmd + A on Mac) to select all JSON content.
    – Press Ctrl + C (or Cmd + C on Mac) to copy.
   (This content contains the Access Token – your quick login code)
3. Go to storekey247.com/encode → Select the Encode tab.
    – Paste the copied content into the input box.
    – Click Generate to create the code.
4. Copy the generated code and send it with the email registered for ChatGPT.
   Example: XXXXXXXXXX - example@gmail.com
5. After the upgrade is successful:
    – Reopen chatgpt.com.
    – Press F12 or Ctrl + Shift + I (Cmd + Option + I on Mac) → Go to the Application tab.
    – Delete all Cookies and Local Storage of chatgpt.com.
   (Helps secure your account and prevents others from reusing the old token)

⚠️ Note: Do not share your token or JSON content with anyone except for upgrade purposes, as this token can log in to your account.