We do not have a download file for the latest version (9.3.2.6), but you can try downloading it from the developer's site
Download version 9.3.2.6 from the developer's website
Version: 9.3.2.6 (x86/x64)
Date update: Oct 22, 2020
File name: Bulk-SMS-Android-Demo.exe
Size: 2.6 MB