unable to split signal between fios modem and tplink router
i have a Fios router model: FiOS-G1100 hardware version: 1.03 firmware version: 01.04.00.10-FTR and im trying have the modem radio for wifi on, (the Fios-G1100), and have an ethernet cord running into the archer and have that act as a second router that people could connect to, and have the modem be for myself (as im running into buffering issues with everyone connect to 1 router. but the issue im running into is when i connect my rack server to the modem, it does something weird to the archer router. I can't log into the router from my server. and when i managed to login to the archer, it says no ones connected to it and wont give out wifi. people can connect to it, but wont be able to access the internet, this is very new to me, so any help is appreciated, and if anything is needed, i'll do my best to give it