Tiktok: Something went wrong – client_key

⚠️ Error: “Something went wrong – client_key”

This issue usually happens when the TikTok account used to log in is not added as a Test User in your TikTok Developer App settings — not because the client key is incorrect.

🔍 Why it happens

When your TikTok App is still in Development Mode, only the accounts that are explicitly added as Test Users can connect through OAuth login.
If someone tries to log in using a TikTok account not listed in the Test Users section, TikTok will reject the request and show:

“Something went wrong – client_key”

🛠️ How to fix it

1. Go to the TikTok Developer Portal:
   👉 https://developers.tiktok.com

2. Open your app under My Apps → [Your App Name].

3. Navigate to App Permissions → Test Users.

4. Click Add Test User and enter the TikTok username or email of the account you want to test with.

   • You can add up to 10 test users per app.

5. After adding, ask the user to:

   • Log out of TikTok (if logged in).

   • Log in again and reconnect their TikTok account inside Stackposts.

6. Once your app is approved and switched to Live Mode, any TikTok account can log in without being added as a test user.

📘 Summary

✅ So in short:
This error appears because the TikTok account isn’t added as a test account. Add the user to your app’s Test Users list in the TikTok Developer Portal, and the login will work correctly.