Should the ad length is much more than 31 times, you’ll be charged on the 32nd working day the day-to-day spending budget multiplied by the amount of remaining days or 31 days, whichever is scaled-down. Once your ad campaign ends, you can use any remaining money on the future advertisement. https://socialmediaentry.com/story2985013/5-tips-about-tech-influence-you-can-use-today