Fairphone 3+ disconnects from wifi hotspot after authentication

I have a wifi antenna connected to a gateway router. The router is the main gateway and is scheduled to power off at night. I have some IoT devices connected to the antenna which I want to access when the gateway is off but my phone will disconnect immediately after authenticating with the network due to “no internet connection found”. I’ve tried searching for a setting on both my antenna and phone which disables this “behavior” but cannot find one. Any suggestions?

My OS specs:
e os version: 1.13-s-20230724313396-stable-FP3
build number: e_FP3-user 12 SQ3A.220705.004 eng.root.xxx.xxx dev-keys

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