Chime "Setup didn't complete"

Hi there, I've tried every suggestion I could find so hoping someone may have an answer here. I bought a Chime with my Video Doorbell to compliment the three other Ring cameras we have. The Doorbell (and all the other devices) have connected fine to our Google Wifi Mesh but the Chime will no complete the setup. Being diligent, I've tried the following: 1. Connecting to the Google Wifi, within 1 foot of one of the Wifi APs and 3 feet of the Doorbell 2. Connecting to the Primary Wifi AP 3. Connecting to an SSID that runs directly from my internet modem/router - same internet connection but different SSID/network 4. Connecting to the network at my office 5. Connecting to a personal hotspot on iPhone, Samsung Galaxy and laptops 6. Running the app from various iPhones and Android phones The result on all is the same - I can select the Wifi network I want the chime to join, it sends my phone back to it's original Wifi network, tells me "Chime is joining the wifi network" and then eventually times out and says "Setup didn't complete" and I need to reset the Chime and start again. The thing is, the Chime **does** connect to the network, I can monitor it getting an IP and transmitting data over a long period of time and I can even login to the mysimplelink page using the assigned IP. The problem seems to be with the Ring app/Ring servers recognising the Chime? Keep in mind this is from many different phones and many, unrelated networks. This is also the only device we have issues with. Any ideas/suggestions?