Want to learn from the experience, when my player was younger I recall about 50/50 of the time he would get explanation from the CR right away even when asked according to him. He talked to his coach about it and they came up with something where the captain would ask the 2nd time if the orginal player didn't get a answer. The 3rd recourse was to have the coach have a word at dead ball time, half, after the game for clarification.
When you have teen age players with similar bulids, looks, hair mistaken id happens but some of the fouls are not really specific enough like UB so better explanations can help players in the long term.
What other leagues besides ussda really penalize players for accumulation of yellows? 5 seems kind of low for youth players to get suspended for a game. The HS time out rule after yellows would be better IMO