Hi, I have 2 Problems with my P9 1. Two of the 3 P9 are making a horrible hi frequence noise. is there any possibility to repair that one? 2. Since a few weeks i have connected 3 more S1900 connected...

Is it possible to extend an existing P9 Mesh with TL-8030 Powerline Adapters? If yes, How should i pair the TL-8030 to it?