I agree with the poster who said to set up 2-factor authentication on your google account. If someone is hacking your devices, he needs a way in, and that is probably your google account, since it has been compromised.
You will need to give Google a cellphone number to do that. So just make sure that the number you give is not compromised. You can choose to receive calls, rather than texts, to get the log-in code from Google. If you use a call, rather than a text, you will know who got that call.
