I recently upgraded to a fibre network and the ISP installed a couple of additional devices to my previous setup. Initially, the fibre wire goes through a box that converts it into a different sort of cable, and then that cable connects to the MT LINK XPON SFU ONU(which I guess is the modem). Then, via an ethernet cable, it connects to my router (I mentioned this because before any of these devices were added, I never had this problem). The MT Link device seems to be working fine however, the tp link router displays a red light. The TP-Link page indicates that the router is trying to connect and get an IP address but it is taking forever to do so. Interestingly, sometimes, just restarting both the devices a couple of times, results in the router working and I have internet access but most of the time this just doesn't work. This usually happens when for some reason I have to restart the router. Any fixes?