Who doesn't want money? everyone who join campaign aims to earn money so if you didn't get accepted on campaigns much better to check your post history since this will tell all why campaign managers didn't impress and didn't pick you. You need to understand that many campaign participants applies and if they have more better reputation and post quality so they have more chances to get selected by the manager.

Also understand that there are desired board where managers like their participant to post so maybe for now try to check the post quality of each participants of this campaign so that it will give you an idea on what to do to get accepted here or to any other campaign.

Also don't get insulted or angry on the manager and questioned him why you didn't get accepted better move on, improve or find another campaign.