In very rare cases the router may restart after a few hours if you connected the eBlocker to the router.
This behavior is currently only known from the Fritzbox 6490 Cable.
The reason for this is that the eBlocker scans the network for new devices every 10 seconds. This problem can be solved by switching to a 5 minute search for new devices.
Please go to the eBlocker Settings > Menu "Devices". At the top you will see a tab "Device Discovery". Please click on the tab and change the search for new devices to 5 minutes.