By default, Advanced Ads sets the available ad weight for ads in groups to 10. This number increases if the amount of ads in the group is higher.

You can also add your own ad weight maximum using the code below.

 * Increase available ad weight in group settings
 * uses 100 if regular ad weight is lower
 * @param   integer $ad_weight current max ad weight.
 * @return  integer new ad weight.
function advads_increase_ad_weight( $ad_weight ) {
		return 100 <= $ad_weight ? $ad_weight : 100;
add_filter( 'advanced-ads-max-ad-weight', 'advads_increase_ad_weight' );