Is there a Lifetime MAX plan with all AI features?

Hello Smart Book Team! Thank you for restoring my MAX access! I recently purchased PRO Lifetime for $24.99 because I wanted permanent access to all premium features, especially AI-powered grammar explanations, translations, and ChatGPT/Claude integration. However, I discovered that PRO Lifetime only includes a limited set of paid features, while MAX includes all features. I have a few questions: 1. Does PRO Lifetime include any AI features after my MAX subscription expires? 2. Is there a Lifetime MAX plan that includes all AI features permanently? 3. If Lifetime MAX is not available, would you consider introducing this option in the future? 4. Is it possible to upgrade my existing PRO Lifetime purchase to Lifetime MAX by paying the difference? I really enjoy Smart Book and would prefer a one-time purchase instead of a recurring subscription. Thank you!