HAMRS won't open

Just downloaded HAMRS from Playstore on my Samsung tablet. When I try to open the app I get an error, “The connection to the server was unsuccessful.
(file:///android_asset/www/index.html)”
I tried redownloading and installing again and still get this error.
Any idea what’s happening??
VE9ZZ

This is the second report I’ve received about Samsung tablets being wonky. What version of Android are you running?