Payments Don't Work On Firefox

I can't subscribe without creating an account, even though I wanted to pay with BTC. I dislike Discord because it’s a privacy nightmare, but I understand that small web services may not want to create entirely new systems for every feature. However, I don't understand why it's impossible to pay with crypto without needing an account on other services. Also, even with a Discord account, I can’t pay with BTC because the website doesn’t work on Firefox (without extensions). It works flawlessly on Chromium-based browsers, though.