TACO editor ist a brillant editor but unfortunately closed in 2015 or so - anyhow version 3.0.9 can be downloaded still on a platform, but not purchased ... does anyone have informations or an idea how to get the license, how to purchase it...?
Unfortunately, since TACO editor has been closed, it may not be possible to obtain a license or purchase it officially. You can try reaching out to the developers or searching for any alternative versions or similar software available.