I started investing now at the end of the year, but an acquaintance of mine told me to always convert my money to dollars. I did that and ended up buying some cryptocurrencies and meme coins. However, when it came time to sell, it said that I had to have a minimum quantity, for example 30, and I have 15 to sell. Can you tell me if that's true? Just a request for help because I'm a bit lost. #ajuda