Have you connected your camera or other device to your main modem or a router?
If it is a router instead of a modem, this could be the problem.
A router needs to be set up like a switch, which means that the DHCP function (function that assigns ip-addresses to devices in your network) of a router needs to be switched off.
Because a modem also has DHCP, errors can occur in your network as a result of duplicate IP addresses being distributed or your camera not being recognised by your modem or router.
If you only use a modem, then we advise you to look for your camera in the network overview of your modem.
Once you have found it, you can set the restrictions to Unlimited and enable the UPnP function.
Unlimited restrictions gives your camera more freedom within your network.
UPnP ensures that devices connected to your network are assigned listening ports by your firewall to improve communication.
You can always set the ip-address of the camera to Static, then the camera will always get the same ip-address in your network.
Additionally, if you want to set up port forwarding, you can do this over port 80 using a UDP protocol.
You can find out how to do this in your modem's manual or ask your modem supplier.