Hi,
Finally, I removed Samsung and Google accounts from my S6 active mobile and now I can use it without the old accounts.
device Android 6.0.1
steps are:-
1- Put the phone in download mode => open Oden
2- Flash the ENG_SBOOT_G890A_4_PF1_by_masterRt1994.tar with Oden from AP.
3- Put the phone in download mode => open Oden
4- Download and flash the sboot with Oden from CP.
5- Select on the Z3X G531H
6 Press 'Reset FRP/React/EE' to deactivate Google/Samsung/EE account activation lock.
7 After put the phone in download mode again and check FRP-OFF
8 Reflash the phone with the latest firm ( if you flash with the same firm the FRP will back on and nothing will happen. phone will still lock)

Don't forget to press thanks if you like my post
Finally, I removed Samsung and Google accounts from my S6 active mobile and now I can use it without the old accounts.
device Android 6.0.1
steps are:-
1- Put the phone in download mode => open Oden
2- Flash the ENG_SBOOT_G890A_4_PF1_by_masterRt1994.tar with Oden from AP.
3- Put the phone in download mode => open Oden
4- Download and flash the sboot with Oden from CP.
5- Select on the Z3X G531H
6 Press 'Reset FRP/React/EE' to deactivate Google/Samsung/EE account activation lock.
7 After put the phone in download mode again and check FRP-OFF
8 Reflash the phone with the latest firm ( if you flash with the same firm the FRP will back on and nothing will happen. phone will still lock)

Don't forget to press thanks if you like my post