I believe you have to play 10 matches in a single format so like 10 matches in 1v1 and as long as your ELO is high enough you’ll show up on there.
EDIT: Also judging by the current ladder a lot of it is just people that went 10-0 or 11-1 or something and stopped playing so your ELO might’ve just fallen below the 200 threshold if you have played more than 10 1v1s.
I see. Thanks, this comforts me some. Although I seriously want to participate in the tournament in 2 weeks and qualifiers are on Saturday. And I’m not sure I’ll get a shot unless the ladder updates D: apparently they’re only taking first top 20 players and I was ranked #23 2-3 days ago, and well since it hasn’t updated properly, I’m saddened that this might cause me a tournament D: