u/Basic-Opposite5369

I recently bought a 2015 MacBook, it has arrived today and when I put my password in to log into my apple account, it repeatedly said the password was Incorrect, so I changed it on my phone, I gave it 10 minutes, and when I tried again it still won’t let me, so I went onto the website to change the password, and it won’t let me as some other screen is glitched into it! Any help would be great