I have two similar scenarios.
There is a main Router/ Modem of timewarner (cable provider) is has DHCP.
I configure the routers to be used as Access point's (disable the DHCP ) and connect the connection coming from the source (main router/modem) to one of the ports .
It works well for a while every device connected get the IP from the main router/modem.
After a while , I get limited connection on the device . Restart / reboot the device it's ok for a while then again it happens.