Hi marchesa,
Welcome to the Apple Support Communities!
We are happy to help with the issue you are having with being asked for your password to automatically update your apps even though you have your Automatic Updates option turned on in settings. You should make sure you are running the latest version of software. Learn how to Update your iPhone, iPad, or iPod touch here.
Check out the section "Customize automatic updates" in Update your iPhone, iPad, or iPod touch. "Some updates might need to be installed manually." Is it all apps?
"If you tap Install Tonight, just plug your device into power at night. Your device will update automatically overnight." Are you leaving it plugged in overnight?
Cheers!