To me, the official documentation is your screenshot of 'How to Install Security Mount' (but your YouTube video doesn't mention it either). Step 3 makes no mention of the screen.
I tried using the screw as per your photos, but the camera and mount seemed to be more secure without it.

I think this is my next question.
What benefit does it serve?
Reolink have obviously gone to a lot of trouble to provide the screw and how it connects the camera and the mount?

As you can see the screw is only 7mm (0.28 inches) in length.
The screw is silver.
Without taking down the camera and unscrewing the camera from the mount I cannot show you where the screw goes, but the mount has been specially designed for the screw to go into a hole.
It's not a huge concern but I wondered why it is not mentioned in the official documentation.




Reolink_ECO_Screw-640x480.jpg

Thank you for reply.
When I mentioned the lock screw, it is a little silver screw and there is a hole for it to be inserted and then the screw tightened.
I haven't seen any mention of this screw in the documentation and your Reolink YouTube video (https://youtu.be/01ptIq0551o) doesn't show it being used.

1) I have had 3 attempts to attach the Eco to the security mount so that the camera is the right way round.
Each time, the aerial has got in the way and I have been forced to mount the camera upside down and the use the App to rotate the image.
Anyone else had a similar problem?

2) I have cursed the little white spacer which fits inside the mount. If you are up a ladder, you have to be very careful to ensure the spacer doesn't fall out when you unscrew the camera from the mount.

3) What is the purpose of the lock screw? I have watched an official Reolink YouTube video and they obviously don't have the lock screw fitted and simply screw the camera to the mount.

The last time a file was sent to the Cloud was 6th May 2019, 7:56am.
Since then nothing. I am on the free plan, but have a second Eco to install and so wanted to see how good the Cloud was.
I have several times, unbound the Eco and bound again. But nothing.
I am using the Android App and the PIR Schedule (must be the default) is all a blueish colour.
The Eco has an SD Card and video is being written to the Card. It captured 6 movements today (7th May 2019).

PS I have read the instructions on how to connect to the Cloud.