Crypto Education LMS Technical Review

I have inherited an older learning management system that teaches cryptocurrency and blockchain-related education. The platform already exists and has users, courses, lessons, quizzes, progress tracking, certificates, admin features and some access/payment logic. It works, but it is dated, messy and difficult to maintain. There is very little documentation. The database is not clear in places, some parts have been added over time by different developers, and I am not confident that simply patching it again is the right decision. I am looking for someone technical who can review the current system and help me decide the best route forward. This may be: upgrading parts of the existing system rebuilding the backend creating a cleaner API layer redesigning parts of the database migrating the data into a cleaner version or recommending a phased approach I am not looking for someone to guess a full rebuild cost without reviewing the system properly first. The first stage should be a paid discovery/specification task. I have access to a tool which seems like it may help speed up part of the rebuild. I am not technical enough to judge whether it is the right fit, so I would like your view on whether this could help, or whether there is a better approach. I am open to using it if it reduces time, but I am also open to a different technical recommendation. Existing Platform Includes The current LMS includes most of the following: student accounts admin users courses lessons/modules quizzes course progress certificates access/payment logic admin management reporting old database tables and legacy fields The system is not clean. That is part of the problem.