Just a quick note I have to wait for a security log in code now every time I launch the launcher.
I dont clear my cookies.
Its not remembering my device.
I am on Windows 10.
Using Wifi.
TY 
It happens to me too and also on my android and on google Chrome. Always have to send an email of verification even after ticking the box of “remember this device” the previous time. It is getting old.