read this post specially #12 and #13 http://forum.tp-link.com/showthread.php?3320-W5210G-CPE-cabling-scheme&region=china

you will only find 5Ghz netwroks, TL-WA7510N is a 5Ghz device not like your router at home that is 2.4Ghz

http://www.tp-link.com/en/article/?faqid=173 http://www.tp-link.com/en/article/?faqid=14 http://www.tp-link.com/en/article/?faqid=174 http://www.tp-link.com/en/article/?faqid=437 youn have to change...

http://www.tp-link.com/en/article/?faqid=462 http://www.tp-link.com/en/article/?faqid=463 http://www.tp-link.com/en/article/?faqid=498

torches wrote Just got a beta firmware. Will test and provide feedback. Published Date 1/11/2013 Modifications and Bug Fixes 1. Fixed the wireless instability and hang issue

you did not post firmware version, if you have latest, reset your RE and start over by loading latest firmware, following FAQ 357 on post #2