Question about Square Enix security token

[Canadane]

Over all the app is just poor. I stopped using it a while back because they only allow you to install it on one device. I have 2 phones that I swap between. Also loooong ago when I use to root my phones it didn't work well either.

In short, take notes from Blizzard on how they allow you to install it on more than one device. Also how they allow you to save a backup code for easy restore if needed. SE is still living 10 years in the past when it comes to their security token and hell even the game launcher.

All the phone does is emulate what the physical security token does.
It's fine for what it is. You can only use one physical token, it makes sense that it'd only be on one phone.
There's still a backup code as well to remove it, I dunno what you mean otherwise.