Hey @AkoniusTheFlayer,
Have you been able to launch Apex previously, or has it been giving you this issue from the start?
It may be worth trying to repair or reinstall Easy Anti-Cheat itself in addition to the steps you've already taken to repair the game.
Aside from that if you're still having trouble can you attach a DxDiag file so we can get a bit more information to see what could be causing this? Thanks!