Pro 4 Cameras suddenly cannot connect to Router

[geez3]

Bought these cameras 2 years a ago and had no issues until recently when all 3 cameras could not connect to the router. Went over all the steps i.e. reboot router, select 2.4Ghz, disconnect VPN on cellphone, factory reset and even had the Geek Squad from Best Buy help and cameras will not connect. Cannot get a hold of anyone at Arlo for tech support or assistance. Where's the customer service from a known name in home security camera systems? 

[StephenB]

1. Do you have an Arlo subscription?
2. Do you have an Arlo smarthub?
3. Did you replace your router, or change your wifi?