If you are unable to see any uploaded event video or preview photo, please kindly run the Network Diagnosis feature to check whether your Wi-Fi router is connected to the cloud service.
If your Wi-Fi router is unable to connect to the cloud service, please kindly reboot your Wi-Fi AP and see if the issue solved. If the issue is still not resolved, please kindly contact your network provider for more information. You may tell your network provider that you are unable to connect with Amazon AWS cloud service. They can check if the outgoing internet access is available or if there is any DNS issue with your Wi-Fi.
Also, if you've turned on the privacy mode, and the "Exclude Footage" (Android) / turn off "Video Upload"(IOS) option in the settings of the app. You won't be receiving videos of the events if this setting is enabled.