Gateway cannot be detected when setup using WIFI

I have one gateway not able to be detected by BLEViewer and GatewayConfigTool when setup using WIFI, it can only be detected when I plug in LAN cable.

I have others gateway using the same wifi setting and same power adapter is no issue on that. Only 1 gateway giving me the issue.

Any idea how to solve this?

Do you type any blank in the SSID or passcode? You can access the config parameters by URL

http://{THE-IP-OF-YOUR-GATEWAY/connection

see the field ssid and passcode

Nope. Both SSID and passcode should be key in correctly, as I key in the same value into other gateway was able to detect.

Could you please take a screenshot for accessing the url?

http://{THE-IP-OF-YOUR-GATEWAY/connection

OK. Will take screenshot when I back to office, currently we unable to go back office.