In an image it says that the price of my balance
In bitcoin is 439 reais

When I go to confirm, only the value of 405 reais appears

I invested 400 when bitcoin was worth 595 thousand reais

Now worth 670 thousand reais, it seems like I will withdraw the same amount???

I am a beginner on the platform but I am already finding it very lack of transparency

$BTC on Google it appears that the value of bitcoin is 670 thousand reais, on the platform I can only sell bitcoin for 623 thousand. I bought 400 reais when it was worth 595 thousand, I want to sell now but I can't get the necessary transparency here on bitcoin to understand the processes. I'm a beginner.