From the contract:
Dividend Payout Times
All reasonable care will be taken to pay out dividends on time. In the event that the Manager is available to pay out dividends on time, for any reason, then dividends will be paid out as soon as possible afterwards. The holders of the contracts are entitled to receive dividends at the time that the Manager pays the dividends, not at the scheduled time at which dividends are normally paid.
It's the same situation as if a SELL holder had sold the shares before the dividends were paid - you have to ensure that you see the dividends in your account, don't rely on the time to see if they've been paid yet.
OK, This was my error, a misunderstanding. Sorry, merci for your answers

I deleted my garbage.
I like B.MINE and B.SELL, it's better than ASIC-mining or Cloud-mining
