For those who don't know what Av is its a game called Anime Vanguards that replaces another famous tower defense game called Anime Adventures.

Long story short this guy got a license to make a MHA game and that affected Anime Adventures so it got took down and deleted. Anime Vanguards is updating today 6pm-10pm they say it's supposed to update at 8pm and the update is JJK (jujitsu kaisen)
Hope this helps :)