In the right corner of the the Dashboard footer, there is a “Get help” link to https://support.livewhale.com/ – a URL which is of no use to 99% of our editors. Is there a way to change it to my own support page?
(If not, what do you recommend as the smartest way to hide it?)
Sure sure – you could use Customizing the back-end - LiveWhale Support to change it.
With CSS, you could hide it:
#help_link {display: none;}
Or you could alter it with JS:
$('#help_link').html('<a href="">My thing in its place</a>');
Thanks! Two interesting things. Turns out I had hidden it with this css back in March 2021:
.footer #help_link {display: none;}
which seems to have gotten broken by a LW update in the years between. 
Second, it didn’t vanish till I added a div this time; that is, the code is as follows:
div#help_link {display: none;}
… but perhaps it was just cache.
Glad that worked!
I think at some point .footer became #footer in the back-end HTML markup, that might’ve been why the old backend.css stopped working.