It looks like there may be a letter missing in the url. Shouldn't it be hiddentrailscornmaze.com? I think the n is missing from "corn".
I got the site on my desktop browser after I inserted the n. By the time I tried it on my phone, the site had switched to an "Under Construction" message, but i did not get the Can't Connect error.

Looks like Ray and Acorn got there ahead of me. :-)