In order to invest via this platform you must be categorised as a "client" for regulatory purposes. All investors are required to successfully complete the "Appropriateness Test". All UK individual investors are treated as retail clients.
All UK investors using this platform are eligible to complain to the Financial Ombudsman Service or to claim compensation under the Financial Services Compensation Scheme (FSCS) (although you cannot claim FSCS compensation for investment losses).
Different regulations apply in different countries and before being able to invest you will asked to confirm that you meet the eligibility requirements in your country.