I recently bought TP link AV600 powerline/WiFi adapters. 1 plugs into router and I have the extenders at 2 different points around the house. They've both been paired and the WiFi SSID/password has been cloned to both extenders. My router transmits dual band WiFi. I understand the extenders only transmit at 2.4GHz. My iPad connects to WiFi with no problems all around the house, both 2.4 and 5 ghz. BUT....when I lock the iPad and it sleeps (standby), it will not pick up WiFi to receive any messages that were sent to it. Only when you wake up the iPad does it reconnect and the messages arrive. This ONLY happens when the 2 extenders are on. If you switch them off and only the router is transmitting, the iPad stays connnected to WiFi even when asleep and receives all messages. Any ideas? Please help. It's driving me crazy :)