Fathom-X to Arduino

I’m having an issue connecting my arduino to my control computer through the Fathom-X tether and interface boards. Previously I used a U-Link Sender and Receiver to connect to the three arduinos within my ROV. But moving to the Fathom-X to increase the tether length, I’m no longer getting a connection. I’m seeing the Link lights on both the FXTI and the interface board, but the arduino is not showing up in the Arduino IDE. To connect to the ethernet output I used this Ethernet to usb converter https://www.amazon.com/dp/B07W4L6Q9P/?coliid=I10W9URNZ12RNP&colid=1S6OK9UBWM5J1&psc=1&ref_=lv_ov_lig_dp_it and then connected to the arduino. Does anyone know why the interface isn’t connecting? My current guesses are most likely and issue in the ethernet converter but I’m not sure what kind I would need instead.