Error code 205.4

I want to sign in to adult swim on my amazon fire stick, but it keeps saying "Hmm… that isn’t the ID you use for this service. Try signing with another ID." which is a(Edited per community guidelines)olute (Edited per community guidelines) because I just logged in with the exact same email and password on my phone. So what are the options to login. I understand its for protection and all that, but still I don't understand how I can't login with the correct email/password.