RAK7289 Wireless dropping

Having issues with a RAK7289 were currently using. It was previously configured to connect to a wireless network, which now needs to be changed.

When the gateway is powered on the built in wireless network used to access the admin address (192.168 etc), the wireless network it generates RAK7282CVD keeps connecting but immediate dropping.

Any advice on why this is ? and how to be able to access the admin settings again.