Depends who you want to hide from. 99Stack is a Swedish company, Sweden is a part of the 14 prying eyes so they're obliged to hand out any information they have about you on request.
There are better ways than VPN for true anonymity, just ask for offshore locations. There should be a few of them fully managed via API and the control panel. Since the offshore servers are owned by different companies outside of the 14 prying eyes, there shouldn't be any obligation, neither interest to hand out your information, plus that you're technically in a different legal jurisdiction anyway and local laws applies.