Check your emails you might have also received a VIP boost from shuffle.com. I'm only Bronze 2, but I got something like this (check the image I attached). I haven't received anything like this before, only now. For sure, if your VIP level is higher, your bonus will be bigger bonus. I think it's been about a month since I last deposited and played on shuffle.com, but I received this. Usually only those who make deposit received this kind of bonus.
I'm a bronze 5 rank user, but I haven't received any email regarding this reload. My last deposit was on July 26th on Shuffle. I hadn't checked my Shuffle account in the last few days. So, I can't confirm whether this bonus was attached to my account without any email message or not. However, I think it isn’t related to not making deposits. There could be some other reasons.