Recently, I messed around with the simulator from Xcode and logged in my Apple ID. After that, my iPhone (8, if that helps) had the "Developer" panel in the settings app. I activated the fast app termination, thinking it was useful, but after a day the panel dissapeared. I am now stuck with the option active with no way of turning it off and it's really annoying. Anyone got ideas?
Did you try to search for «developer» in settings app.
as mentioned, it deleted the deceloper menu