played rush poker for 4 hours and promo counted only half the hands

Put in four hours grinding rush poker, kept track of my hands cause I wanted to max out this promo, but at the end it said I only played half of what I actually did. I’m not one to obsess over every click, but if I’m gonna sit and avoid the roulette wheel for hours, it better count for something. Anyone else have this issue? Is it a known thing with fast poker formats, or did I just fall into some kind of weird technical glitch?