I tried to open developer option but when i tap the menu it said
Turn on developer options first so i try to enable developer mode again by taping build number but is reply
No need, developer mode has already been enable
I tried to access it by searching option in setting but when i tap any setting it would tell me to enable developer option first.
My device is Galaxy A7 (2017) Model number SM-A720F/DS Android 8.0.0