Address: Unit No.12 & 13, First Floor, Luthria House, Sativali Main Road, Sativali, Vasai Road (East) Maharashtra India Pin : -401208 From here: http://www.tp-link.in/about/?categoryid=107

You may try to set a static wireless channel like 6 or 11 for your root router and then reinstall the TL-WA730RE according to this guide: http://www.tp-link.com/en/article/?id=357 If you donot want...

changing wireless channel of your root router. Reinstall the driver of the TL-WN821N (Uninstall the anti-virus software first).

Have you tried to reset the TL-PA411 to factory default settings ? They are in the same electrical circuit, right ?

I heard that the TL-WPA281 cannot support "seamless roaming"....

Nerver tried that...Seems unconfigurable...:(