Well I guess the trigger for the "Wheel" spins are the betting then? I have not received any email for this option and I have been with Freebitco.in for many years. My email is working fine, because I get the other "promotional" emails that they use for advertisements over weekends.
So I will place a few bets on the hi/low and see if that also activates this "wheel" for me. Thank you for giving me this tip... I was feeling left out, because everyone else has been talking about this.

I don't think so. I've been getting one every day, sometimes even 2 (not all the time but I do recall days with two spins) and I usually just play 2 days' worth of spins at the same time (therefore missing a couple after their 48hr expiry hehe).
I have sometimes bet hi/lo but haven't noticed any difference in WoF spins?