How far is the adapter from the router? If it is too far and signal is not good, the connection can't be stable. Besides ,use inssider to check the interference and choose a best channel for the...

Do you have bandwidth limited for your internet? Normally ISP doesn't limit the total bandwidth but real time speed. And it seems to be impossible for a phone still use internet when it is turned off...

Actually if your product is still under warranty, you can ask for a replacement.

You may have a try to recovery the router: http://forum.tp-link.com/showthread.php?81462-How-to-recovery-the-router-when-you-bricked-it&highlight=fitz if this can't help either, I'm afraid you need...

No, no limits. However, it may be not so convenient to manage all 100 plugs in one account.

Hi awb, how does it work again? Did you change some settings?