I recently discovered why 7TV was down for me but not for others. Turns out, in Spain, major ISPs are blocking Cloudflare and others in an effort to crackdown on football piracy. See more about this here (compilation of news articles, mostly in spanish but just so you get an idea and that this is a real thing): https://community.cloudflare.com/t/laliga-movistar-ip-address-blocks/784448
This issue is pretty bad especially during the weekends where there's usually a lot of football throughout the day. I'm guessing 7TV uses CloudFlare, because as soon as I used a VPN it got fixed. This isn't a simple DNS ban (eg: blocking 1.1.1.1), as I was using Google's DNS anyway. I don't really know how you'd be able to solve this (and probably will go unsolved since a migration is probably required), but basically if you live in Spain, unless you use a VPN you won't be able to use 7TV.
