Take our apologies for the delay in answering.
We removed Legenda, Royal and WooPress from TF because we started to sell them on 8theme.com https://www.8theme.com/#price-section
If you bought the theme on ThemeForest you still have access to theme and plugins from the Downloads area of your 8theme account https://www.8theme.com/downloads.
The latest version of the theme supports WP 5.8. If you faced any compatibility issues just let me know and we’ll check them in more detail.
Legenda 4.3.2 is the latest version available at this moment.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.