@Dknudde,

When you get stuck at the connecting to network part of the setup, it is often caused by a setting on your phone, related to that the cameras wi-fi. On most phones, Private Addresssing will be turned on by default when you connect to a new network. Unfortunately, this will often cause issues with the connection, as the camera will not be able to recognize the phone after disconnecting.

Are you trying to set up the device using Android, or by iOS?

Try attaching the camera to another network to see if the behavior only occurs on the main network. I would recommend setting up your camera on your guest network and enabling allow the devices on the guest network to see each other setting from your router interface.  

  @Dknudde,

Is it a possibility that you have an IP reservation for the device set on your router? This will prevent the device from reconnecting if it is not recognized by the router as the same device.

Depending on why you cannot connect: 

When your phone is connected to the Wi-Fi of the camera, go into the settings on your phone and disable private addressing for the network. It may be that the device cannot reconnect to your phone, rather than the home network. 

You might try setting up the camera far away from the router to ensure it is trying to connect to the 2.4 band and not the 5Ghz band. 

Connecting the device to the Guest Network usually works as if it was a seperate network; given that it could not connect to this network, I think that the connection between your phone and device are being broken, causing the setup to fail.

Otherwise, what router are you using for your wireless network?