Hi Ralph, if you're using the ISP DHCP, we won't be able to alter the type of IP address their devices are getting. I've never heard of IPv6 causing apps to fail though (doesn't mean it isn't happening, just that I personally haven't come across that yet). To really help you with this we'd need to dig in to the traffic being sent during these failures. That would likely need to be a packet capture, and to dig in to that we'd need to open a support case.
That said, I do have a few questions that might help narrow things down- Are there any commonalities with the apps that aren't loading? I know this is pretty basic, but off the top of my head I might try checking for updates to the apps or uninstalling and reinstalling the apps if you haven't already, just to be sure it isn't an issue with the phone itself. You said the apps won't load on wifi, if you turn the wifi off and go to data, do the same apps load right away? Do they have issues with the apps on any other wireless network?
