Ring Elite Video Doorbell quit working and now unable to join the network "Ring Setup f4"

We purchased our Ring Elite video doorbell from our Licensed Professional Electrician - he is experienced with and has professionally installed many of the Ring devices. We paid him to professionally install the Ring Elite video doorbell. Our Ring Elite video doorbell (Hardwired via ethernet) worked perfectly for a few weeks then, quit working after approximately 3 weeks. We have reached out to our electrician for help and unfortunately he has not been available for the past few weeks due to work schedule. Our WiFi and VERY high speed internet connection is working just fine - everything connects without issue - including the Ring wireless doorbell (plug-in model). We have reviewed and tried ALL of the suggested trouble shooting steps to no avail. When we get to the reconnect internet step, it continually say unable to join the network "Ring Setup f4" ... We would sincerely appreciate help with what we can do to remedy this situation ASAP.I just found the phone number (US 1-800-656-1918) for and reached out to Ring Community Support and and waiting for a return call from them ... At this point, we are very disappointed ... the Ring Elite video doorbell is quite expensive and failed after 3 weeks. Perhaps it is defective - wondering if we would be able to have the Ring Elite video doorbell replaced under warranty?ANY help would be appreciated. Thank you!