I feel your pain! It's a slow day at work so I'm also working on my site but I'm having to use my phone as a hotspot. It's soooooo slllloooowwww.
we got a router and i connected it to the modem and the internet works now! im honestly not sure what the problem was but im glad its working now ( <-- has very limited knowlege about internet hardware)
i may have figured out why i dont have that link; my site may be too large to download that way ^^;
is it a bug? the download feature offers your site to you as a .zip file which, afaik anyway, has limitations on how large it can be as well as how many files and directories it can contain... not to say it couldn't be a bug, just that it could also maybe be something else
home page -> edit site button -> below the files window, there should be 3 links. One should say "Download entire site".
I love this :D I'm learning a lot and also i love the layout <333