OK!! I believe you tickets get reset every sunday but so as you know I have zero referrals. All I wanted to say boil down to my tickets got reset last sunday only not before. Maybe it was system error or whatever. I had expected better explanation but anyway thanks for your time...
There wasn't an error. Did you gamble more?
Yes I often use Multiply BTC. From what I conclude the only thing I did different this time was to use lottery bonus. Maybe that became prerequisite for my participating in that week's lottery and at week end my tickets got zero.