Survival Trial Mission event

On 2017-05-01 08:43:21 ｜ Show this Author Only ｜ Descending Order

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http://i.cubeupload.com/A6rLlO.png

So far as I can tell, some of these refuse to let me claim them, even though I have done survival every day of the event, completely finished and haven't lost any of my characters at any point.

Am I misunderstanding something? I mean, I know that the English is not great to begin with, but what am I missing here? It's been days and some of these have never been claimable it seems.