I went to withdraw and they did not pay me

I invested in this platform the considerable sum of 1488$, they sent me an email with the password that they give you, and so it was, after that I entered and I had my money, after that I made operations in the market and I did very well, I won more than 6500$, I proceeded to withdraw and it is there when they did not pay me they asked me for a QR code and it does not work.

The following is the original recommendation

Fui a retirar y no me pagaron

Yo invertí en esta plataforma la suma considerable de 1488$, me enviaron un correo con la clave de acceso que ellos mismos te dan, y así fué, luego de eso ingresé y tenía mi dinero, luego de eso realicé operaciones en el mercado y me fue muy bien, gané más de 6500$, procedí a retirar y es Allí cuando no me pagaron me pidieron un código QR y ese no funciona