The only way is to have a dev roll your campaign back to an earlier time but if you made changes from the last time the server your game was hosted on did a backup till now, those changes will be removed also. You will have to contact the devs at <a href="mailto:Team@roll20.net" rel="nofollow">Team@roll20.net</a> and supply your games name and approximately what time you need it restored. The devs will do their best to help you. As this is also the weekend, the devs might not respond very fast so it might take them a while (not stating how long as that depends on their schedule, etc..).
