First, you have to distinguish between your external and your internal IP address.
Your internal IP address (starting with 10.) is just visible for your computer and our VPN server. So you don't need to care about this.
In fact your external IP (probably 83.65.30.29) will always be the same. But this single IP is shared among ALL Hideway users. So at the end, no one can say who of our users was doing what. This is complete privacy you can trust.