Thread:Tobias mann/@comment-36084759-20181221070739/@comment-31458611-20181221135231

You shouldn't have swapped back mid-event. No need to worry, though. What happened to your 117-trophy box is that it ceased to exist as a box as soon as it was rewarded. But at that moment its 11 cards were added to the kid cards inventory anyway, which is server-based all the time (like tokens) and hence common to both devices. Just check if you don't have 2 more V12s than before.

So you can keep farming boxes. But there's no reason to resync again until the end of the event; you'd only be increasing rework and the risk of some misstep (like forgetting the game running in the backgound while starting it on the other device; here, "closing" the game must be taken literally).