How to document the time and date of something using a camera? An app?

[metrologist]

Well, you do realize that you are responsible for the structure as you built it and placed it there. Then you became aware of this issue and believe it to pose a safety and liability concern. Further, you have taken measures...and no action. You cannot address the issue yourself and do not hire the appropriate services, not even for a qualified evaluation. If this persists, you are documenting your negligence over a period of time, which only builds to work against you. You are also only observing the symptom, although the cause seems obvious.

I am sure I would be doing the same. I'm not made of money nor endless ability, either. I can truly sympathize with your situation, as fortunate as it seems to be