my iphone keeps asking me to sign into my Apple id
A couple of days ago after I changed wireless systems, my Apple watch, iPhone, iPad and Mac told me that my Apple ID was being used by a new iPhone that had the same name as my iPhone. I have 2-level authentication, but didn’t get a code. It was weird so I changed my password and signed back in. Today, my Apple Watch, iPhone and Mac said that Apple settings needed to be updated and I needed to sign back in.
What’s going on?
iPhone 8, 14