I am in an apartment where the only cable connection is Verizon FiOS via Coax, there is only (1) port in the entire apartment. I am using the Verizon G1100 

My wife’s desktop computer has no wireless card, and is too far away for an ethernet connection.

I want to be able to plug in the Archer C7 with only the AC adapter for power and have it wirelessly receive and reproduce the G1100 signal (ethernet WAN connection not feasible). This way, the desktop in the other room can be connected to the C7 by ethernet cable and receive the Verizon 5GHz signal.

I have tried enabling Bridge Mode, selecting my Verizon SSID to clone, and disabling DHCP - it worked as I wanted for roughly an hour but then stopped working, I assume this means some setting automatically renewed and my setup didn’t follow. I would guess that means I want to get a Static IP setup - what confounds me is that it actually worked at first but I haven’t even been able to make it work again for a second.

Let me know if you have any insight beyond what I’ve already found by Googling. I would’ve given up by now but somehow it worked perfectly at first...