They don't share the number but it's a lot. The total players might cross 2k-3k online player or even more, just look at cn trade chat, it's crowded always. And I myself can just name 500-600 players who play the game daily
Some People have a lot money to spend in MMO, So they can start the infatuation in market. There is nothing someone can do about it, the vanity prices will rise day by day until people stop paying for them in game currency. RPs prices are so high since 2020 halloween.
What do you actually mean... You just need to download the game client depending on your OS and then log in your old game credentials. Just type Download PokeMMO in google search bar it should appear. Just go for it and you can play.
Good Luck