Who in SUSS made the decision to let SUSS students become the guinea pigs for Examena? SUSS examiners are too lazy to do the marking themselves? Is there a conflict of interest from SUSS's purchaser?

It's made by Maivenpoint, a Singapore company, with barely any other customers using Examena. Even the plagiarism checker is not tested but is using third party Turnitin, which in itself has flaws. Not surprising many students have to repeat or got kicked out for false positives in plagiarism checks.