@Rudi-F 

I would suspect you need to do a factory reset on the camera and reset it up.

  @terziyski Are you suggesting that a WIFI capable device one used via Ethernet cannot be addressed via WIFI?

terziyski wrote

  @Rudi-F 

 

No, I've meant that if you use the ethernet port of the camera you won't be able to use its wireless connection at the same time and vice versa.

As has been suggested probably its best to reset the camera and re-add it again.

  @terziyski Thanks, I will have to think about that because I don't know how to set up a different port for WIFI. As an aside when you set up the camera and while you are looking at the video from  a menu you select set up on WIFI, the software scans for SSID, prompts for password and, if ok you pull the cable ad you sre on WIFI. I wonder how my old Netgear router which broke handled that so seamlessly.

  @Rudi-F 

All routers work with the same basic specs and handle Ethernet and WIFI the same for the most part. So I do not think it is a router issue.
 

If a device is used on a different router for WIFI, sometimes it will not connect due to the device security features. You need to delete/forget the network and reset the network connection. Happens a lot on Apple devices, but also others. Some devices, you need to reset to factory to reset the network settings.