Reinstall TikTok from the App Store or Google Play Store
Check your internet connection
Restart your phone
Update your device’s operating system
Clear the app cache
Log back into your TikTok account
Reset your password if you cannot sign in
Check if TikTok is down in your region
Remove any app restrictions or parental controls
Enable TikTok in Screen Time or Digital Wellbeing settings
Make sure your account was not banned or suspended
Contact TikTok support if the app or account still does not work