I approved the request via Email.
How long will this take? Anyone know?
Once you approved the email, you should see a reset counter on the site ie stating how many more days left. You should not login nor reset anything else till the cool down is done.
edit:
Should show something like this:
A two factor authentication reset request is currently pending approval in 20 days 23 hours 59 minutes. For more information click the Reset Two Factor Authentication Button