there is a lot of discussion about this in wishlisMembers support forum
but the developers over there ignore it.
Any way try this:
// get the current user level from WP more important is global $user.
$user = wp_get_current_user();
// Get user levels from WishlistMembers
$levels = WLMAPI::GetUserLevels($user->ID);
//then run the check for the level you want like this:
if(in_array('silver', $levels)){
// PRINT OUT THE silver LEVEL stuff here
}
elseif (in_array('gold', $levels)){
// PRINT OUT THE gold LEVEL stuff here
}
Simple.