Ring Pro v2 - CANNOT CONNECT TO WIFI VIA APP

I am about to remove my Ring Pro v2, get a sledgehammer out and smash the useless over priced junk into little pieces. I have spent the last 3 hours trying to reconnect my Ring doorbell to my Wifi. It's worked (more or less) perfectly for the past 2 years or so. Today our internet provider has issues and our internet is back up and running. Obviously every single internet / wifi connected item in our house has reconnected to the wifi (because it's really that simple) EXCEPT our Ring doorbell. Before anyone responds: RSSI: On the app it says -57 and in green - so all good. Mobile Phone: Apparently some issues reconnecting doorbells to wifi are caused by having your mobile data turned on, so I've turned it off. I've also restarted my phone etc etc. Reset Doorbell: I've done a 20 second reset on the doorbell. Reset Router: I've reset the router. When using the app, the light will be spinning on the doorbell (white light) and I'll be trying to connect to the Ring wifi. Every single time........NOTHING. "Cannot connect to Ring wifi". Even manually it simply doesn't appear. Oh, and the spinning white light will obviously stop as well, so if you can't connect automatically, you have to reboot the doorbell to try to get the white spinning light again to then try manually. Does anyone know a good reliable fix?? Remember, it was working fine this morning, so I don't want any Ring employees asking me to "make sure the router is near enough to the doorbell" etc etc. JUST MAKE YOUR OWN SOFTWARE BETTER!