Microworkers Jobs

Hello guys, I don't know if you encountered a problem when doing "TTV-Web: Search + Engage + Screenshot" on microworkers. I always get more than a 1000 tasks like this before I do one of them but for a reason I don't know all the jobs dissappear after I sumbit one task like this. Do you know about this issue. I would appericiate if any of you here knows these problem and it's soluition. Thanks