Only Firefox on Android keeps giving me "connection was reset" on specific website

I'm running Firefox version 153.0 (build #2016172927) on a Samsung Galaxy S24 Ultra running Android 16. Firefox works fine accessing pretty much any website I ask it to, EXCEPT for one: https://www.site2241.net/. This is my own website put together with nothing more than HTML, CSS and some basic Javascript. It also has HTTPS for secure connections. Roughly 90% of the time when I attempt to access this website using Firefox on my phone, I receive a "The connection was reset" error. This is only happening with Firefox, and only Firefox on Android. I have Firefox on two laptops and a desktop, with the desktop running both Linux and Windows. None of them have this issue, only on Android. I've now also loaded and tried Chrome, Opera and Brave on to my phone. None of them give me this problem. Only Firefox. I've tried changing just about any setting in Firefox that I can think of (HTTPS-only Mode both on and off, DNS over HTTPS both on and off, Enhanced Tracking Protection both on and off, etc) that might affect this, and nothing seems to change it. Go to the website, and most likely I'll get the "The connection was reset" error. This website, puny and pathetic as it may be, is kind of my running technical diary. If anyone has any ideas, please let me know. I'd really like to stick with Firefox. Thanks!