This Thursday a key virtual hearing was held for the case that has the selection of Ecuador since Chili ensures that the player Tri Byron Castillo in reality he is Colombian and therefore should not have disputed any of the eight games who played in the playoffs.
FIFA must make a decision in the next 20 days.
Source:
https://www.americanchronicles.news/key-hearing-for-the-byron-castillo-case-the-evidence-presented-by-chile-and-what-fifa-could-decide-on-ecuador/So in 20 days, max October 5, we will know if Ecuador will participate or not the next World Cup.
If not, Chile will be the squad to occupy the spot, I suspect they are already preparing to play.
Oct 5 is only 46 days to the first game, coincidentally Ecuardor will play the first match.