I'm impressed you figured this out.  I bet you learned a lot in the process!

I'll make a suggestion that will clean up your network a lot may require you to reconfigure a few other things (including your dryer).  I notice you are daisy chaining the routers in your network by going from a LAN port on one to the WAN port on another.  This creates what is called Double NAT and was the reason you had to change the LAN IP on some of your routers because a router cannot have its LAN and WAN ports on the same subnet.  You could (should) have went from the LAN port on your first 192.168.1.1 unit the a LAN port on the next router.  Then, in the settings of the second router disable DHCP.  You could do this multiple times (or just use switches if you don't need an access point).  By doing this you only use one DHCP server in the network and the downstream routers are not doing any NAT for security purposes.  All you devices would then be on the same network.