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I think, could be..
There has some reason behind it, my question did you still playing or deposit ? these bonus could be triggered by your balance or Tx transaction. I don't have any transaction for the last few weeks.
But the bonus still being distributed everyday at 19:30.
Of course I'm still playing/depositing because I am actively participating in their weekly tournament so I make deposit at least twice a week. I also participate in the forum slot multiplier contest too so maybe I have more transactions than you although the amount is lower than yours. If you have no transactions in the last few weeks but you are receiving FS almost everyday, while at the same time I have 6 transactions this week only ( 3 deposits and 3 withdrawals) but I receive FS once a week only since January. Based on this, maybe you get more frequent FS because casinopunkz want to attract you to make another deposits.