Ring doorbell pro white light pulsing

Hi, I bought new ring doorbell pro to replace my failed one. The Wi-Fi went down and I couldn’t connect it so it’s been stood a while. Eventually got Wi-Fi sorted, but doorbell won’t spin white, it’s a pulsing white which is apparently update mode. But it won’t update as it’s not connected to Wi-Fi and I can’t connect it as it won’t spin white. Tried resetting it, pressing the button, unplugging it, can not get it to connect. It has never been connected to the base station. No idea what to do.