Hello! Using a VPN with your DITO sim while availing of a promo should not result in any blocking from DITO. However, it's essential to note that DITO's terms and conditions may change over time, so it's a good idea to check their official website or contact their customer service for the most up-to-date information. Using a VPN can sometimes help protect your privacy and security while browsing the internet, but make sure you are following all the rules and regulations set by your service provider. If you have any more questions or concerns, feel free to ask. Have a great day!