The save file I downloaded is an .exe file, and when I open it, it tries to install some program. At first, I tried not to rename it, but it wasn't there.

First, read how to download from Letitbit - you always need to choose "Download for free" (with a 60-second wait). It seems you installed the Sky Monk program from Letitbit:rolleyes:. Try downloading for free step by step this time.

Here's a plan of action:

1. First, click "Download slowly" (in gray),
2. then in the next window, a button-green bar will appear, the bottom one, with the inscription "Download with a 60-second wait and advertising (speed about 50 kb/s)". Reject all offers to install the Sky Monk program from Letitbit or simply close these windows!
3. in the new window with the "Letitbit subscription", look for a gray, inconspicuous button "Skip",
4. in the next window on the right, where there are 2 green bars, click the bottom one, with the inscription "Download slowly" and wait for the countdown
5. enter the captcha and download the file!

If in step 4 you click not the bottom button, but the top one with the inscription "Install and download the file quickly", then you will again be offered to install the Sky Monk program from Letitbit...

In short, follow the instructions and you will download for free and without any unnecessary programs!