Password Reset Problems

Red text on this site tells me 'We have detected suspicious activity on your account.
We recommend changing your password here as soon as possible.'

I go to change password and receive link, i click on link, and this website tells me 'There were problems verifying your password reset key. Please ensure the current URL is the same as the one you received via email.'

I'm just trying to connect the account to Steam to claim some 'Twitch Rewards'

Help.