I have a network with 1 M5 (main) and 2 X50-PoE in my apartment. The M5 is connected directly to the fiber box of my ISP. I installed the X50:s about 10 days ago and they run on PoE. Yesterday the network suddenly became completely unstable. Clients are unable to connect regardless of whether they are wired or wireless. Some clients work temporarily but then get thrown out. There is no consistency to the type of client that can connect or that can't. But most of the wired clients like printer, file server and TV don't work at all. The network usually has about 20-25 connected clients but now it's down to 3-5. Trying to connect for example my Kindle to WiFi yields an error message that the network is unavailable or something similar. I tried to replace the M5 with another one but there was no change. Does anyone have an idea?