Slaughter Ticket Bug

So I was in zombie mode trying to use my slaughter tickets, and I hosted a hard mode Devastated City. I started it with 2 other people but none of them entered. I was alone the whole time I was playing, and anytime it said someone had joined, they would never appear. One time someone joined, never appeared on the scoreboard or in-game, but was able to use the chat. Then after getting all the way to round 26 by myself, I was suddenly kicked for idling too long, which made no sense as at the time I was in the middle of a group of speedilos spraying away. Then I go to my storage, and all my slaughter tickets are gone, but as far as I can tell I got no rewards. Please help me, I'm really confused...