Because RAR is a proprietary format, you need a third-party tool to open it. Popular options include: Extracting Multi-Part RAR Archives - Newshosting Support
Ensure every part is saved in the on your computer. Datei herunterladen EV_RS2_6EGVH.part01.rar
For the extraction to work, you (e.g., .part01, .part02, .part03, etc.). Because RAR is a proprietary format, you need