Good morning Jasmine!
It sounds like you’re having trouble signing into and using your Apple TV the way you want. It’s important to be able to watch the movies you’ve purchased, so I’ll be happy to work with you to isolate where the issue is.
You mentioned that the Apple TV is not accepting your password. Let’s figure out if the issue is with the Apple ID password or with two-factor authentication. Are you able to log into our Apple ID website with your Apple ID and password? Manage your Apple ID
If you’re not able to sign in with your password here, then you'll need to reset your password: If you forgot your Apple ID password
After successfully signing into our Apple ID website or after changing your password, let's try these next steps on your Apple TV. Sign out and back in on your Apple TV using the steps below from What to do after you change your Apple ID or password
To play content from your Mac or PC on an Apple TV (4th generation), go to Settings > Accounts > iCloud. On Apple TV (3rd generation or earlier) go to Settings > iCloud.
- If you're signed out, choose Sign In. You'll be asked to sign in with the Apple ID that you entered for the iTunes Store. If you use the same Apple ID for iCloud and the iTunes Store, choose Yes.
- If you're signed in with your previous Apple ID, choose Sign Out, then choose Sign In. You'll be asked to sign in with the Apple ID that you entered for the iTunes Store. If you use the same Apple ID for iCloud and the iTunes Store, choose Yes.
After signing in again, let me know what happens when you try to watch a movie. Is your password accepted? Do you get an error?