Slow spending is often due to the camp not having enough learning signals or the target being too narrow, causing the system to not find enough suitable people to distribute. In addition, weak creative, too low bid cap, or incompatible budget/day limit with the file also causes delivery to be stuck. Sometimes, it is also due to account trust or payment method being slightly limited by Meta, so the spending pace decreases. Do you make any adjustments during the running process or let the distribution be completely automatic?