I have a frustrating problem where all my wireless devices will be knocked off the network on both 2G and 5G but when resetting router only some will connect but most will not as per my iPhone picture below. I have tried changing channels, SSIS names, location of router, forgetting networks and yes called virgin and they replaced router 3 times yet still the same issue. Have checked to see if channels congested but not the ones I select. Have enough DCHP etc etc etc. Has anyone got a resolution to this problem!! Sometimes it will fix itself after me playing around for an hour or 2 but this is now wasting hours of my life!