I have added a hotfix for 2.2.1 which saves the
Max. Clicks value correctly. Thanks for dicovering this bug ... seems that nobody ever used it
The only affected file is admin_rbs.php in your forum/admincp folder.
For the rest I have verified (once again) that the product runs perfectly well on 3.6.8. Due to a refresh problem, after the product installation it is necessary to reload the whole page in order to view the menu entries at bottom.