for  me to get  my cheap 2.4 TFT to work, I add  to void setup(void)  

this will find your TFT ID and use it, 

void setup(void)
{
   Serial.begin(115200);
    uint16_t ID = tft.readID();
    Serial.print("TFT ID = 0x");
    Serial.println(ID, HEX);
    Serial.println("Calibrate for your Touch Panel");
    if (ID == 0xD3D3) ID = 0x9486; // write-only shield

change  0x3229 to ID

     tft.begin(0x3229);       to   tft.begin(ID);