Looking at Reddit
[EU-FA-FAILED] Can’t install any games. : r/EpicGamesHelp (reddit.com)
[EU-FA-FAILED]
I have tried everything that involves deleting every trace of epic games and unreal.
Edit: I have solved the issues, it was my custom DNS, it was blocking a backend domain.
This is a networking error and Epic cannot verify your sites DNS address
This may be covered under
Getting an Educational License - Community / Community & Industry Discussion - Epic Developer Community Forums (unrealengine.com)