Device Manager - can't delete dormant

[Belloni]

I have alot of items connected which I want to clean out but when I press delete nothing happens? 

 

And also it says some devices are active but they are not, but I can't delete them either, any ideas how to remove? e.g someones phone but I can't "disconnect" it as they aren't here...

[PharmDawgg]

Try rebooting the router by using the reboot selection under settings>miscellaneous. Then go under device manager and delete the devices.

[Belloni]

Delete, fixed it.

[PharmDawgg]

Great.