@gdeuss_529466405777614 Update, after another reboot of my phone it started working. Part of the issue may be that it takes some decent connection or it does not have the bandwidth to stream 4k and we have lousy coverage near my house

I have the same challenge with a Pixel 7 Pro on Google FI. Can access all my cameras via WIFI, on my home network or remote and it works great but the cameras never connect on cellular. I did add Reolink as an exception per this post but I can still not connect via cellular data. My son's iPhone connects fine using Google FI as well.