If this is the best you can get, you are better off not renting their stuff and buying an OpenWrt One for a time $100 investment give or take.

No really, they are pretty decent. I stopped running an old PC for router and firewall after I got a Fritzbox. It can traffic-shape, forward ports, configure fixed IP addresses and DNS names, provide limited guest access to the WiFi, analyze the WiFi spectrum (and show a graph) to choose uncongested channels, and do a whole bunch of things that I don't use but which are conceivably useful like VPN server, file server and such.