I don't think you could find any personal reviews here seeing how the platform does not take retail customers and internet message boards like bitcointalk being filled with average people AKA retail customers
Institutions seeking to join the growing list of EDX members should follow the steps below. EDX’s Membership team will coordinate an introductory meeting which will lay the groundwork for the Membership and technical onboarding process.
... EDX does not onboard or accept any deposits from retail customers.
There's also the fact that they just started:
The exchange began processing trades in June 2023.