SM-G750A Samsung reactivation

hello…I have a G750a I try using frp remove adb to remove Samsung account but it wont let me…im able to use phone but wont let me uncheck reactivation lock…any ideas?

It’s firmware is 5.1.1 OH4.
I can enable USB debug and root.
Says succes on FRP Remove ADB but when reboot REACTIVATION =ON still. No way to uncheck it in settings.

Any ideas? Please and thanks!!!