For a TikTok account:
Correct Credentials: Ensure you're using the correct login details for the social media account during the pop-up browser authentication.
Permissions: Make sure you grant Social Tip the necessary permissions when prompted.
Re-authenticate: Try disconnecting (if partially connected) and reconnecting the account via the "Accounts" page in Social Tip.
Social Media Platform Issues: Check if Instagram or TikTok are experiencing any service disruptions.
App Updates: Ensure Social Tip and your Instagram/TikTok apps are updated.