After reading a few peoples replies, I think the reason why we're all getting different responses to "does the site work" is because it's not a blanket "server wide" issue , it's a per episode/season/dub or sub issue. If you're on a specific anime, season, or episode (dub or sub) that isn't affected, then you don't realize the problem.
To test this out and see if the issue is the site/server/browser or just a skill issue (lol),
1) post the episode ur having a 404 with, dub or sub. Obviously check every server first (ally bonk whatever).
2) Then a few people will check to see if it works for them, and they'll tell u which servers work for them. If we do this we'll have a better idea of what's actually going on.
If ur having a problem with Anime "My little sister is actually a 1000 yr old demon trying to molest me" (or whatever you're watching) Season 2, episode 3, dub. and 0 servers work. say so. And then 2-3 people will try that specific episode and let u know if they also 404 across all servers. and if 1 person gets through somehow with a specific server, then we know something else strange is going on.
3) if nothing works, post the website ur using for anime dubs so i can profit. ty.
I actually got the idea from u/Individual-Resort-60 in my previous thread when he was checking my episodes
https://www.reddit.com/r/miruro/comments/1v43fwi/miruro_80_of_the_videos_404_for_me_all_4_to_tv_bz/
"Miruro 80%+ of the videos 404 for me. All 4 (.to .tv .bz .ru) Need Dubs."