I can't login to the elite website. I have tried multiple computers and also my phone, I have also tried different browsers and tried clearing my cookies and checking my cookies settings in chrome and firefox but whatever I do I get a "redirect loop" error.
It may sound silly, but what Jaliy said is an option you could try. You can still tie your gamertag to the new account. There is no workaround that we know of so this may be your best attempt aside from waiting it out (which isn't working out for most people now adays).