Doorbell Gen 2 STUCK IN REBOOT

Hi Recently purchased a Doorbell Gen 2 but are having very little luck in setting it up. We've rebooted it several times to get it to link to the internet, also gone into our IP address and made amendments for it to connect to different channels to no effect. Now it seems to be stuck in a constant reboot, the blue light is flashing on and off (1 second intervals) for a number of times. Can any techs help tp rectify this please? We've even set up next to the modem but still no luck, we last got it to set up last night but with no video function at all cause it says it wasn't connect to the wifi even though it told us it was now all linked and set up.....