You are sure you are typing your new password correctly? (Have to ask)
That account does own a copy of ESO, right? (You don't have more than one account for some reason?)
Im using same informations to log into the game as im using to log into https://account.elderscrollsonline.com/
I played ESO befor from this account and even bought it when it released 2014.
pretty sure im using correct informations. i even copypasted it.
the message tells me to check informations or if im a steamuser of eso i should try login in via steam. no error#