Can't Load firescans in Firefox?

im running the most current stable 64-Bit release of firefox at the time of this post (120.0.1)

so the tl;dr is i can't seem to load firescans.xyz right. it gives me the cloudflare loading screen (which frankly has become annoying to witness damn near daily for the websites i browse), shows the front of the webpage, then after a brief second of seeing the wbepage and everything, it all vanishes into the void, leaving behind a featureless white screen. after much experimentation, i found out that it isn't any of the extensions i have, but i think it.....might relate to one of my chosen about:config settings? i say this because when i made a new profile (firefox.exe -p) and tested it out, firescans.xyz loaded just fine, but switching back to my default still showed problems

here is my prefs file for my default firefox profile. idk if it'll help, but if i can pinpoint what i changed that futz'd it all up, that'd be mighty appreciated, otherwise if there isn't......i'll bite the bullet and take the L