Hello, Folks So, I have this BLU Smartphone running android 6.0 and I did a factory reset (FRP Active) and when the device started again, it asked for the last Google Account the device was synced with. With all set, when I hit 'next', a toast message is displayed at the bottom: "Unable to sign in to device due to a unknown error. Please try another account or try to sign in again after 24 hours." Relevant information: -The Internet Connection is fine; -The account I'm trying to sign in with is the previous synced account; -The password was not changed before the reset (but, after some failed logins I changed the password; and the error remains the same); -If I type a wrong password on purpose, the normal login error message is displayed. If someone know a work-around or have some information, please tell me. Thanks in advance.