Before opening the downloaded folder, run a virus scan. While Yarongtech is a legitimate company, software from smaller industrial manufacturers is occasionally flagged by over-sensitive antivirus programs. While this is often a "false positive" due to the software needing deep system access for hardware control, it is better to be safe.
Even with the correct "yarongtech software download", issues can arise. Here is a troubleshooting checklist. yarongtech software download