We do try hard to block ads in popular apps, but marketing and ad companies are always changing hosting and serving of their ads to avoid ad blockers. It is sometimes the case that attempting ad blocking actually ends up blocking the content that Lockdown users actually want to see in their apps, so it is a balancing act. We haven't given up though - it's a work in progress and we are constantly working to improve our blocking. If you have any specific sites or apps in mind, please contact us at team@lockdownprivacy.com