Camera feeds are dead on my IPhone Reolink app

The other day my internet was fairly intermittent and that lead to my cameras being online/offline quite a lot. When i checked my NVR my cameras worked fine and it was the same for my desktop client, but for some unknown reason all the video feeds are dead on my IPhone? I have reset the NVR (even though it wasn't needed) and all my cameras are disconnected. On Wi-Fi i get nothing and with data on my phone they've never worked since i started using an NVR but that's for another day. Anyone know how to fix it? Thanks.