From Aaron Dalton, Director of Campaign Management, StartEngine:
Traffic originating from services that obfuscate ID or location (such as most VPNs) as well as traffic originating from hosting providers are blocked. If the investor disables his VPN, this should resolve this issue. This safeguard was implemented by our engineering leadership to protect our entire issuer and investor community. I hope you can appreciate this decision. Please let me know if you have any questions here.