Need to know.recently at 8 ish pm til 7:15 ish cameras show no footage

Very important I get alot of wild animal my yard daily nightly. Recently my cameras show absolutely no footage at all from 8pm til 7am .and I’ve been told that a bobcat is back and walks through my yard and my cameras are not recording…
Can someone else interfere and somehow have it to where it doesn’t record and set that way .nightly .same time always the same time .
I’ve looked and reset all cameras to more sensitive I don’t use my led night because my visiti g wild ones wo t look at it or go near it …I’ve expermented. So I’d know.any help ideas suggestions please and thanks everyone