Thanks. All good points. The address of the IP that the Beryl gets on the WAN is 192.168.7.217, but your point that somewhere something could be using 192.168.1.xx makes sense. If this isn’t a known problem or whatever and other addresses are working, clearly there’s a conflict with this one.
When I’m back on my own network, I may experiment a bit to verify. But your point that I’ll avoid grief down the line by just choosing something less common is extremely well taken. Thanks a ton!