Can't login my appleid on an iphone4
I fully know typing the verification code after the password already. Did that but it will always say, password is incorrect after. I am 100% sure it is the correct password followed by the 100% correct digits from the verification code sent to my trusted device which is an iphone6s. I have repeated this a thousand times already. Typing the pw then then code , it will always say it is incorrect, then immediately after there will be a new code sent on the 6s. This is absolutely so boggling. Please help. Just any other way , and why?
iPhone 6s