What should I do if none of the common troubleshooting steps resolve the Roblox 403 authentication error?

If you've exhausted all common troubleshooting steps (checking credentials, internet, clearing cache, reinstalling, disabling VPN), consider these advanced options: 1. Contact Roblox Support with detailed information about the error. 2. Check your account security to ensure it hasn't been compromised. 3. Perform a malware scan on your device. 4. Reset your network settings (note: this will clear saved Wi-Fi passwords). 5. Try logging in from a completely different internet connection to rule out ISP-specific issues.