Hopefully you aren’t depending on whitelisting MAC addresses for your security. The problem with that is these cameras have an issue where they aren’t necessarily the address you see on the bottom of the camera. There is a bug that may make them revert to the network card’s MAC address on occasion. There is also an issue of quality control – I have one cam that isn’t reverting to the network card’s address, it simply is on a different Wyze address than they put on the bottom of the camera.
I turned my MAC filtering off years ago. Too much of a pain for the return.
As you know, you will need a 2.4 GHz network. That network must have with WPA or WPA2 encryption and a password. The network cannot have a landing page. Hopefully no ports are being filtered by your router. There are some possible issues with ASUS routers, but most everything above can be corrected if you encounter it.
Even though they tell you to put your phone on the same network as the camera during setup, it really doesn’t matter as long as you enter the correct info in the setup forms that come up. That’s the only reason they do that. Too many people blindly hit enter on the forms. So if you are on a different network you need to correct the form to show the SSID of the 2.4 GHz network during setup.
Best thing you can do up front is turn off MAC filtering, and make sure you have a WPA or WPA2 password.