"Your Apple ID is being used to sign in to a new device."

Read this document if you think your Apple ID has been compromised. --> If you think your Apple ID has been compromised - Apple Support

For iOS 15 or earlier, if you want to see if anyone else has access to your device or accounts, click here --> See who has access to your iPhone or iPad - Apple Support

For iOS 16 or later see how Safety Check on iPhone works to keep you safe. How Safety Check on iPhone works to keep you safe - Apple Support

Use the information in this document to check your Apple ID device list to find where you're signed in --> Check your Apple ID device list to find where you're signed in - Apple Support

Related materials:

Personal Safety User Guide

Personal Safety User Guide - Apple Support

> open the Table of Contents and review the articles

A document with general information about security and your Apple ID --> Security and your Apple ID - Apple Support

Contact Apple for help with Apple ID account security. This page provides country-specific Apple Support contact information ➞ Contact Apple for support and service - Apple Support

Use the suggestions in those article to confirm account security. While it is a good idea to confirm that there is nothing wrong with the account, the kind of messages you see are the kind of thing many users have sometimes seen with no real explanation. You are welcome to contact Apple but I suspect even they might not be able to tell you. I know I got that kind of message when I once started up a device I hadn't used in a few months.

You'er not signing in at the moment and changing your password does not resolve the notifications? Please restart your devices and if the issues persist, I would Contact - Official Apple Support if I where you to be sure that all Is right with the security of your account

yea that's prob not gud😬 click don't allow and prob completely change ur password.

oh if u r always using ur email to sign into stuff then that's probs u