I understand your directions and have used the following:
Code:
<if condition="(($post[postcount] % $vboptions[maxposts] == 1)) and !is_member_of($bbuserinfo,10,11,12,14)">
I have tested with a user subscribed to the 'Custom Usergroup' 12 and they were able to see the ads. I thought it might be because four group IDs were separated by commas so I tried this:
Code:
<if condition="(($post[postcount] % $vboptions[maxposts] == 1)) and !is_member_of($bbuserinfo,12)">
The user was still able to see the ads. Does the code you have provided only work for 'Default Usergroups'? If so, would it be possible to do this with 'Custom Usergroups'?