What tips do you need to pay attention to when connecting router wifi?

What tips do you need to pay attention to when connecting router wifi?
It supports 2.4Ghz only at present, and 5Ghz cannot be supported.
The hidden wifi cannot be supported.
The special characteristics cannot be supported. (!, @, *, %, #)
The settings on the router cannot be started, such as AP isolation, anti rubbing network to restrict wifi access.
Confirm the encryption mode of your router is WPA/WPA2.