It's normal that files are copied to
users\%name%\AppData\Local\Temp. Actually that is just a step on the overall installation. After copying the files there, the installer will bring a dialog that asks you to confirm if you really want to install the drivers, and if you confirm it, it will use those files to perform the final installation.
The Quirkbot doesn't really have it's own driver, all the installer does is tell windows to use the built-in
C:\Windows\system32\DRIVERS\usbser.sys every time the Quirkbot is plugged in.
It's worth mentioning that the reason why Windows 7 and 8 need this installer in the first place, is because Microsoft implementation did not comply to all the standard USB Serial classes. That what was fixed on Windows 10, ands that's why you don't need to install drivers on it (same goes for Mac and Chromebooks) .
Just to be sure, have you installed the drivers from here?
On another note, for all our users, we are about to release (within this week) a new update of the our Chrome app, that takes in consideration a lot of different quirks of handling serial on multiple platforms and should provide a much smother experience for everyone. If you are seeing the message "No Quirkbots detect" way too often, hang-on for a few more days and things should get more stable.