samsung J500H/DS unlocked but still locked

Hi,
I was trying to unlock from couple of days J500H/DS
tried old versions of pro and and also final 26.4
it say unlock ok but still asking unlock code
00000000
12345678
also not worked
its from saudi country came
kindly suggest/help the process to find the bug/glitch/or perticuler set issue

I even flashed set/reset still no luck
thanks.