Missing albums covers on topster when downloaded

[Algorhythm2]

I made a topster using Chartr and it worked fine on the website itself. I expected it to look the same when I saved the image. However when I downloaded the topster as a PNG, the image did not show most of the album covers. Two of them showed up just fine but the other 62 albums did not have covers. They just showed the title (I had titles turned off) and the little PNG icon, then an empty space. I tried multiple times after but the problem was the same.

To reproduce it, just make an topster with 64 albums and use the settings I used here. Then click "download". Image below is a screenshot of the website.

Now here is the PNG I got from clicking "download".

OS: Windows
Browser: Chrome Version 103.0.5060.66 64-bit

Remember, the website itself shows the album covers just fine. They are only missing on the image I download.