I'm on Android, so can't test on my end. From the screen shots, seems the experience should be nothing like what you see in Safari. Take a look at the scrolling screen shots, here:
http://www.messageforums.net/iphoneforumreader.phpand static screen shots here:
http://itunes.apple.com/us/app/touchbb- ... 58253?mt=8Support forums for the app are located here:
http://www.messageforums.net/support.phpWhat I couldn't find is whether you use the regular URL for the forum, or, if you have to add "touchbb.php" at the end of the forum URL to access the script (see link in my last post). At the very least, I'm assuming you need to enter the exact URL for the forum (rather than the HST homepage) into the app settings.
Also a stupid question, but did you try to access the forum through the app itself, or with Safari? I believe you must access through the app in order for it to work.
There are a couple of other options out there, like TapATalk, that I can try if this doesn't work.
I should also add that TouchBB only works with iPhone. Others, like TapATalk, work cross platform.