I have noticed sometimes when cellular coverage is spotty, the assignment goes through, but due to some kind of glitch it stays on the to-do list. If I pull it up again, it doesn't have any photos or information. But if I check "My Activity,", it is on the list as either submitted or submitting or whatever. That is what counts. In those cases, I just ignore the new listing, make sure to submit it as done on the CI website, and everything is fine.