I'm playing on the most recent version of firefox on OSX (modern macOS) 13.2.1 (I'm not sure how a mac update could fix a firefox problem, but I'll keep you posted when I do update).

The game can load (only when I'm not on my home internet, which is apparently too fast - I can explain it if you need), but when it does and I click a couple things, firefox brings up the "Gah. Your tab crashed" page. I've resetted everything. A note to state is that I am playing on private windows, and I have "strict" as by blocking settings.