in low-rank chats only players are asked to give them an account, looking for a girlfriend, or other nonsense like spam, I think you should keep the chats as they are. if the chat and the game is dead, evaluate the changes and the conditions of the game since day after day there will be more those who leave the game before the reality of the current game that is based on:
1.- the purchase of bulk tokens.
2.- the high fusion costs
3.- not solve the problem of inventory items legacy (affecting the inventory limit)
This game used to be of strategy, effort where anyone with a lot of dedication, work and talent could develop their mech, now it is impossible to do it without buying tokens. and if they were spent surely the just reward was received, now in this version is spent and likewise you do not get anything unless you "buy bulk tokens"
from there that special portals have to be made to compensate for the failures in the economic design of the game, before 300, 400, 500 players were observed, now only 140, 200 and the days of special events or weekends you see again 350 players , that data you get without needing surveys or trying to mix chats.