Guys I really need help with this.. I installed the security specialist package on my trailhead playground but when I go to test it in apex test execution it's not there

I created a permission set that connects my user to the authenticator app each time but when I tried to log in my user salesforce requested the code written in the app. when I wrote the code it refused to login. each code written doesn't work. I can't connect to my dveloper account can anyone help