is it possible to play TSTO in pc, i mean, a legal way with loging in into the origin account?
Yes, download BlueStacks for your PC (or MAC).
It's an Android emulator for your computer- it allows you to run Android apps on your PC.
We’re happy to help with your account, troubleshooting, and gameplay questions.
Try these steps first to clear up any problems you may have when connecting to an EA game.