I don’t have the complete answer for how to properly configure the LoRa8 as WiFi client (aka Station), but the first steps are to disable the firewall (to make the configuration menu accessible via wired LAN), then connect it to wired LAN via the RJ45 connector and from there continue with steps to configure it as WiFi client (when wired your connection won’t be dropped during WiFi configuration).
Also see the following: