Can you verify that the firmware version is the latest available?
Refer to the article below on how to upgrade firmware:
https://support.amcrest.com/hc/en-us/articles/360007546891-How-To-Upgrade-Firmware
Are you able to test the Substream using a different browser?
Hello,
The optimal distance for the camera lens is >= 3ft so I would avoid having it any closer than that.
That being said, if the issue remains I highly suggest reaching out to support by emailing escalation@amcrest.com. Here you will be assigned to an Escalation Team Member to help with your...