Why am I getting constant pop up asking for password. new password but still pop up

I changed password but it still continues to pop up.

Then see this Apple article: What to do after you change your Apple ID or password

What to do after you change your Apple ID or password - Apple Support

Hi Likitysplit80,

Thank you for participating in the Apple Support Communities. We understand you keep getting asked for your Apple ID password even after changing your password. If this is happening on your Windows PC, try restarting your computer if you haven't done so. Also, you may want to sign into the Apple ID website to ensure your account and password is working properly. Beyond that, make sure you have the latest version of Windows.

Take care.