LG WK7 smart speaker (Hitchin SG4)

Was working perfectly UNTIL they stopped supporting it via the google home app. So now I can’t connect it to WiFi nor can I see it on Bluetooth. There are no physical connections ( line in, usb). I have tried every possible way to connect and cannot. LG won’t help me and I can’t find a solution online. Gutted as it’s a great sounding speaker. If you are tech minded you are welcome to take it and see if you can connect.