How do you sign into messages? It won’t let me put in my Apple ID password.

Hi lil_emmie19,

We appreciate you reaching out to us.

We’d like to gather additional details that may help us be in a better position to assist you.

Are you in the process of activating iMessage?

If yes, the first step is to sign in to your Apple ID on your iPad.

1. "Open the Settings app.
2. Tap Sign in to your [device].
3. Enter your Apple ID and password.
4. If prompted, enter the six-digit verification code sent to your trusted device or phone number and complete sign in."

You can use the article below as a reference.

Sign in with your Apple ID - Apple Support

Then, you can us the steps below to activate iMessage.

1. "Go to Settings  > Messages, then turn on iMessage.
2. To select the phone numbers and email addresses you want to use with iMessage, go to Settings > Messages > Send & Receive, then choose from the available options below “You can receive iMessages to and reply from.”"

You can use the article below as a reference.

Set up Messages on iPad - Apple Support

If you experience any issues activating iMessage, please follow the steps in the article below.

If you can’t turn on or sign in to iMessage or FaceTime - Apple Support

Take care!