We have detected unusual activity from your IP address, and our proxy check can be sensitive to possible viruses infecting a user's computer. If you're certain you're not using a proxy but still failing this check, the issue could be related to viruses or malware on your device or any other device that shares your internet connection. We recommend checking your computer for possible viruses and/or malware (remove any that are present), and ensure you have an updated anti-virus program installed and running. Once you have removed the malware, it can take up to a few days for the update to take effect in our systems. For a list of Google's recommended anti-virus software, please visit https://www.google.com/safetycenter/everyone/cybercrime/devices/.