I'm not sure it is just the 7th. I too have had intermittent issues getting the rewards. I log into the game each day and some days it does not offer it to me. I don't see any where to click to go get it, just have to depend upon it being offered. And when it isn't offered then it resets to 1st day even though I played the previous day. There should be a place to click to go look adn get it if it does not offer it. Sometimes it seems I need to play an event or something before it will offer it, not just log in. Is that the case?
Maybe they changes the algorithm a bit. Now I sometimes get daily rewards more than once in a day, perhaps if it is more than twelve hours apart (like at 8am and 9pm)?
To respond to your first comment, I believe you are seeing this behavior on a PC? If so, it was reported but, not sure how many players are seeing this weird glitch!!
And with regards to your second comment, I believe it could be another glitch!! Well, I would suggest you to enjoy while it lasts as it might change again
I know, not a perfect answer that answers your puzzle!! But, just to tell you that "I hear you"
Talk to you soon! Have a wonderful rest of the day/evening!
I'm still both issues. I use an iOS device. This week I was offered 1st and 2nd gifts within a span less than 12 hours. Yesterday I lost the 7th gift and was offered 1st instead.