That guy that comes by your house every once in awhile that you think is just a meter reader, is actually someone sent to spy on you.
They probably logged into your account and deleted/replaced your image.
Even if you have a smart meter for electric, there’s still the “water guy” that can check the meter from the outside where there’s a small connector.
If you watch him closely, you’ll see him drop a little pellet into your pipes.
If there is nothing to it, why did imgur.com delete the video?