Afterpay Risk Strategy Analyst interview questions

On the same day as my application, got an interview invitation. Received four emails just for that confirmation. 1st screening was done with Zoom (video interview) and majority of questions covered machine learning concepts and business of Afterpay Touch itself. Since my knowledge was so nascent about machine learning I knew I couldn't answer well. Was told to receive the result within 2 days but received rejection just within 5 mins after hang up.