So......why exactly can't you reset it? Does the page just not let you click the button or type text into the fields? Or, perhaps more likely, you're getting an error message when trying to reset it? If so, would you happen to mind sharing that error message with us?
If you enter your password incorrectly too many times. It will last around 15 minutes. If your account has been inactive for at least 10 days then you may reset your password using the following link. https://en.nostalrius.org/password