Some piracy anime streaming websites, such as Aniwave (aka 9anime) shut down.
It seems animesuge.to, anix.to and aniwave.to closed down with the exact same message, though there may be a few other sites that closed down in a similar way.
You should bookmark theindex.moe (aka piracy.moe), it has a comprehensive list of manga/anime streaming sites, you can use search criteria like langauges, soft-subs, noads, no anti-adblock, etc.
That's a real bummer. I've always had a hard time surfing the high seas for anime since I mostly watch dubbed. I've found alternative sites but they seem to have worse browsing especially for dubs.
I watch about a 50/50 mix, and 9anime/AniWave made it so easy!
I've been on Aniyomi for a while now, but the extensions are getting iffy with me. I checked out AniLab today based on a recommendation, and I think I'm going to keep it as a backup app.
It has a very reminiscent feel to 9anime:
The neatest part, if you click from dub to sub or vice versa, it seemlessly switches audio streams without reloading. I had never seen that before. Would be nice for getting a feel of which someone would prefer.