Classic zody seat is to hard

I bought the Classic Zody and I’ve been using the chair for around 4 days. The lumbar support and the armrests are very good, and I don’t feel back pain like I did with my racer-style gaming chair. However, the seat seems very low quality and too hard. After one or two hours of sitting, my butt goes numb and I feel a little pain. Will I get used to the seat, or should I return it?