Hi. That may be because the programme you are using cannot unzip RAR files. You can download a free unzipper like WinRAR https://www.win-rar.com/start.html?&L=0
Please let me know if that doesn't work, or if you've already tried it :).
I'm sorry to hear that. There are different versions of the download in these folders. Hopefully one of these might work.
https://mega.nz/folder/1IMSFCQS#amcS5vdxVakRO8pIqj300g
(If Asked the key is amcS5vdxVakRO8pIqj300g)
https://drive.google.com/drive/folders/112MXmxwfzhXIg4wi3sP8nxhKV2urZAqw