What does 1 circle of CoolSculpting means?

It sounds like you probably had 2 cycles using the CoolAdvantage Plus which is the larger module that treats more than twice the volume of the smaller CoolAdvantage modules (with 35 minute treatment cycles). The larger module "counts" as 2 cycles for pricing purposes but is still a good deal because more than twice the volume of fat is treated. Check with your provider if you have a further question about the treatments you received.

From the description of the areas treated and the length of time it took, one can safely say that you received the 4 cycles you paid for.  When assessing someone for the CoolSculpting procedure, we determine how many areas will need to be treated.  Each applicator is designed to treat different areas of the body, and uses one cycle for that individual area treated. The larger applicators, which are used to debulk the lower abdomen, use 2 cycles each.  These applicators, called CoolAdvantge Plus take 45 minutes to work their magic.  It sounds as though they must have treated you with the CoolAdvantage Plus twice, most likely one on each side of the lower abs.  If this is the case, you did indeed receive the 4 cycles.  I wish you the best with your results.