The link works fine, I don’t know what is wrong with your browser. You got to the same screen as the interactive map, so I wasn’t concerned with running tech support. Personally I am using chrome mobile.
You can also get there from this page:
https://orl.maps.arcgis.com/apps/instant/lookup/index.html
Clicking into details of the parcel and scrolling down offers the zoning code map; from there is the zoning codes PDF:
I hadn’t seen that particular part, good to know.
Let’s note that the sign itself is on the grassy “NO TRESPASSING” area, since we’re being very, very meticulous here.
I could have done more homework to prove my case, but I was hoping people would actually be helpful rather than repeatedly posting “gotchas”