NO ONE TRADES WITH AN APP, They use the on-line services of a broker/dealer - Robinhood.
NO ONE takes money out of an APP
If you sold stock you CAN NOT claim it - its sold, gone, not yours.
If you bought other stock from the proceeds of the sale of a stock, the new positions (stock) should be in your account AND your latest statement should reflect such.
If the positions you purchased by re-investing funds, does not show in your account or if the proceeds from the sale of a stock does not show in the account contact the brokerage firm (not an app) immediately.
from The Street