Please help. I can not change mood. "Plug in not supported".
Now it says I'm aggravated.
Before it said no mood.
I've tried over and over to switch it back, and it won't.

What/where do I get "plug in"

This is a new (awful) phone, that Ive been battling to set up like my last phone for almost 2 months. Details above.
Galaxy 7 firefox browser.

I am sad, tired, frustrated, but I am NOT aggravated.