Messages sent to me are delayed? How do I fix this?

I have done that already, any other suggestions?

Hi Xbox player....o,

You can try restarting your Xbox by holding the power button on your Xbox for 10 seconds. See if that works.

How to remove your profile from Xbox One:

Remove a Microsoft account from your Xbox One console

It’s easy to remove any Microsoft account from an Xbox One console, because you don’t have to sign in to the account. Here’s how:

1. Press the Xbox button to open the guide.
2. Select System > Settings > Account > Remove accounts.
3. Select the account that you want to remove, and then select Remove to confirm.
4. When you're finished, select Close.

How to add your Profile to Xbox One:

Add your Microsoft account on an Xbox One console

You can add your Microsoft account to any Xbox One console. Here's how:

1. Press the Xbox button to open the guide.
2. Select your gamerpic in the upper-left corner of the screen, move all the way down and select Add new.
3. Enter the email address for the Microsoft account that you want to add, and then select Enter.
   
   Important Make sure that you do not select Get a new account, unless that’s what you want to do. If you select this, you will create a brand-new Microsoft
   account.
   
   If you’ve forgotten which email address is associated with your Microsoft account, see the Lost Account Solution.
4. Enter the password for your Microsoft account that you want to add, and then select Enter.
5. Read the Microsoft Service Agreement and Privacy Statement, and then select I Accept.
6. Follow the steps to configure your Sign-In & Security preferences to add your Microsoft account to your Xbox One console.

What do you mean by reestartting it?

You can turn off your xbox by pressing the power button for 10 seconds and after a moment turn it on.