it is actually here: http://www.bhnptalers.com/talers/
the link above is a typo.
also, there is no "activation" needed. the board is "activated" when you install it.
however, your best bet is to start over and install using the software from here. the software in the host one click installers is not the same as the software you get here from the creators and this type of problem is often what happens.
I also see your board with no problem right now.
if you do not see it, then you need to at least refresh your browser and maybe use your ftp and delete everything from the folder named cache except for the index and htaccess files.
then, you can read the userguide found in the menu above or in the documentation that comes with the board files from here. that will help you learn how to use the board.