Check your Apple device and see what the current IP "new" address is. You know that the old one was in the range of 192.168.0.1 but the new one could be anything in the range of 192.168.1.1, etc.
In certain cases it can be useful to know which IP address your iPhone, iPad or Mac uses. This includes assigning a fixed IP address or setting restrictions. You may also need the IP address when using (S)FTP to transfer files, connect accessories or connect to a media server. The IP address...
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You will have to temporarily setup your IPV4 address, on your computer, to access the cam, and and once logged in then change the cam to your new network IP address. Not sure how you are powering the cam. Is it a POE injector or a small POE switch or something else?
To get to the old cam IP change the IPV4 address in your laptop. i.e. "Use the following IP address"
IP Address 192.168.0.1
Subnet Mask 255.255.255.0
Login with the camera IP at 192.168.0.9 and make the necessary changes. Once changed in the cam then reset the laptop IP address to "Obtain an IP address automatically" The wording will most likely be different for Apple products.
It is also a good idea to make the address static in both the cam in the router so that it does not change.
On a Windows system one just uses CMD and then ipconfig for the necessary info. On Apple it is different.