I bought the TL-WA1201 to use it in a place where there's no power supply. It came with a PoE injector. I am using a 20m CAT6 Ethernet cable and the PoE injector. Problem is that it boots as soon as I turn it on, but after blinking a couple of times then it reboots. This happens constantly so it loop reboots. So it's unusable. In the Installation guide it states that the injector supports up to 30m long cable. When I remove it from its place and bring it inside with a sorter cable then it works. So I guess not enough power reaches the AP? What can I do to fix this?