Membership 2 iPhone6 Login redirects to 404

When I login with a membership 2 account on my phone I am getting redirected to a 404 page. I have tried 3 different phones. Can someone please explain? Dose this have something to do with cookies (I know membership 2 had some issues with computers not accepting cookies a few months back)?

If you would like to test:
You can create a free account here.
And login here.

I can log into my admin account via wp-admin.
I have ran a plugin conflict and not found anything.
Support access is granted.

Thanks,
William