Seeing multiple devices;
There is no way around it; requires a Hardware reset.
1) Push Reset on back of router for 30 sec
2) Unplug power for 30 seconds while having the Reset button pushed for 30 seconds
This will clear the multiple device issue
Wireless Range;
Upgrade to Version 1.1.40 will increase the range
QOS (Media Priorities)
Have been modified in 1.1.40 for download only seems to be fixed;
1.1.39 Upload and Download had to be set 15% above the normal download rate.
IE11
Use firmware 1.1.40
smart wifi problem Remote management
Hardware reset.
1) Push Reset on back of router for 30 sec
2) Unplug power for 30 seconds while having the Reset button pushed for 30 seconds
Setup manually
Login into your Smartwifi account then associate you router to your account.