I remember their site inexplicably not letting me download anything despite being logged in. I think it wasn't able to retain my session for some reason, though

I remember their site inexplicably not letting me download anything despite being logged in. I think it wasn't able to retain my session for some reason, though it's been a while (I looked around 2023). I do remember trying different browsers and even different machines, to no avail. Quickly gave up.