In the exceptional circumstances of the COVID crisis, The Financial Conduct Authority (FCA) in the UK again stated they would allow additional time to implement SCA for ecommerce. The new PSD2 timeline of 14 September 2021 replaces the 14 March 2021 date. After 14 September 2021, any firm that fails to comply with the requirements for SCA will be subject to full FCA supervisory and enforcement action. https://www.signifyd.com/psd2-strong-customer-authentication/