Sorry for the trouble. It seems like, I needed to setup a bridge between eth0 and wlan0. I am not sure if that was needed to be done (as any video from "PineappleWifi University" didn't mention it) so I assume that this is not a necessary step. However, this might help some people in the future. So just keeping it as a reference. Also, I connected the ethernet to PoE LAN port instead of WAN/LAN port. I guess attaching the LAN cable to the improper port is what was preventing it from connecting.