Where did you copy this from, I translated it with "google", and it turns out to be a Home Repair advertisement.

On the newer release note of WA850RE, it says "Added a new function allowing users to modify the extened SSID" http://www.tp-link.com/en/support/download/?model=TL-WA850RE&version=V1#tbl_j

I seems like your computer having trouble obtaining an IP address from the Wireless Router, you can try to set a static IP address on your wireless adapter , if you know the subnet of the wireless...

Does your PC also have a wired connection ? You can configure your TL-WN821N V2 as a Soft AP to share your Internet connection , then connect your TV to the SoftAP. The user guide have the...

I'm afraid you have to wait for their Win8 driver

Maybe you should reinstall the driver, cause the adapter driver for 32bit /64bit system is totally different.