I'm having the same issue. I've been trying for about a week now to log into my account and it tells me my password is wrong is I try to reset it. I get through the security question fine and then I get to 'Choose new password', I enter a password and it says 'Some information is missing or incorrectly entered. Please check below and try again". I double check that the password I put in fits the parameters and then it takes me back to the first screen.
It asks me for security details, which I enter. then it takes me to the next screen where I see the New password and Confirm password text boxes. After I fill them both and press change password it kinda refreshes the page and says that some information is missing as it does for the user above me.
I can then re-enter the new password and press the button again however this time no information is missing but my password also doesn't change it just takes me to the start of the change your password form.
its looping round and round there is no mere fields to enter data the password passes its strength and length test it just wont reset.
I've tried multiple times its an error with the form.