Sounds like you need a "dumb AP" config.
Wiki gives more LuCI oriented advice: https://openwrt.org/docs/guide-user/network/wifi/dumbap
But it might be easier to follow this old advice from me:
Sounds like you need a "dumb AP" config.
Wiki gives more LuCI oriented advice: https://openwrt.org/docs/guide-user/network/wifi/dumbap
But it might be easier to follow this old advice from me: