If you have a legitimate license and need to install the software, the (the component that creates native iOS and Android builds) requires: System Requirements - Twixl Help
If you are looking for a legitimate way to use the software without immediate payment, you should use the official channels: Twixl Publisher Pro 10.6 for Mac Free Download
Twixl Publisher is . Standard pricing for professional use typically starts at around $2,450 (€1,950) per year for an annual subscription. If you have a legitimate license and need