Hello, I have a KPN 12 Box and two repeaters in my place which worked completely fine until three days ago. One morning suddenly the internet cut off and it hasn't changed until then. I have tried restarting and resetting router , wall modem and repeaters but no luck. I have also tried changing the cable that connects the modem to the router. All the devices connect to the wifi but it doesn't have internet. On the wall modem the light for connection is green. The internet light on the modem keeps blinking fast. Has anyone experienced something like this before ? What should I do to fix it ?