Same problem here, I got no message that I finished the task, but I got the cabin in my inventory but no elf, no gifts, no Zutroy :/
I'm playing on android, so I guess it's not platform specific
I haven't got Zutroy either. Furthermore I can confirm codefrog2004's assumption, as I was affected by the locked door problem as well and only have 24 instead of 26 elves.
I'm playing with a second account as well, where I DID get Zutroy, and there I in fact have gotten 26 elves.
Same thing happened to mme.
Completed all 19 daily tasks. Got the cabin, but no Zutroy.
I play on an android phone.
Here are my suggestions posted on tstoaddicts. Hope they might help a few people.
1: Go through all the Tunnels again. Tap on every single one of the 19 Tunnels. Open them, scroll through them, exit them. Make sure nothing was missed and everything triggered. (Even if checkmarked.)
2: Check your Task Menu. Go through all the tasks on the left side in the Task Menu. Make sure nothing says Santa’s Tasks. If it does, tap on it.
3: Put ALL Prizes Won in YOUR Town. This means going through EVERY Tunnel to see what you won and making sure it is live and active IN your town. So activate all those Christmas Lights, go through ALL your inventory, place every single item won out in your town regardless if you want it there or not. (If you have multiples due to won last year or bought more, make sure ALL are out just in case. Not a single one in storage.)
4: “KICK” the Game. Once all items are out, all Tunnels checked, then time to start some troubleshooting. Begin with going in n out of Krustyland and the Neighbors. Then try exiting the game and restarting device. You can even go as far as uninstalling and reinstalling the app if you have an Origin Account linked. Just try all the basics to get the game to sync.
5: Check Character Inventory. After trying all above, double check your inventory for Characters just to make sure he wasn’t tucked in there somewhere.