Hmm... probably it doesn't like the browser. Strange. 
Try installing this palemoon addon:
https://addons.palemoon.org/addon/sasuga/
then change the user-agent for that site to
Mozilla/5.0 (X11; Linux i686; rv:86.0) Gecko/20100101 Firefox/86.0
which is the user-agent for the latest Firefox (which Stable does not have). See if that works.
I'll prolly compile the latest palemoon for 32-bit if I can find the time. They say on that download page that while its not supported by them, some packagers do it, so it must be possible. 
