Ok if the website isn’t working for you you can also do a manual update which isn’t actually that much more work.
This thread has a post for all the updates to 4.18.etc for the various Kobos. Simply download the one for the Glo unzip it and put the contents in the .kobo folder on the kobo drive. There should be three things you’re copying over from the contents of the zip file.
https://www.mobileread.com/forums/sh...d.php?t=323394
Note that some people have reported it takes awhile for the update to finish. Just let it run.