Hi @SkyeEden,
Unfortunately, I have the same issue as described above - infinite redirect loop when trying to launch the Metahuman Creator app (this page endlessly redirects to itself without starting the app - MetaHuman Creator Application Form - Unreal Engine) .
I tried signing out and in, revoking MetaHuman access from my account and then re-requesting the access - but to no luck - same infinite loop; tried different browser (Firefox, Chrome, Edge, disabled adblock everywhere) - same problem, nothing helps. It looks like the issue is connected to my account specifically. I contacted the Epic Games support but they didn’t help.
Can you please help? Thank you.