I2c multplexing with micro, sht41

I am trying to use the Adafruit PCA9546A with two Adafruit SHT41 Temperature/Humidity sensors. I am using a ARDUINO PRO MICRO.
The following code compiles and runs but the temperature and humidity are not displayed. The code seems to hang up when sht4_1.getEvent(&humidity1,&temp1) is called(line 48. I think the problem is that the Adafruit_SHT4x.h library does not allow for the calling for tempetature and humidity separately but I am nor really sure.
Any help getting it to work will be appreciated.

// 1/9?2024 TEST SKETCH FOR SHT41 MULTIPLEXER

#include <Wire.h>                 //used for i2c bus, external EEPROM,ADAFRUIT SHT31-D
#include "Adafruit_SHT4x.h"         //added for I2C multipleser ADAFRUIT PART #5664

#define TCAADDR 0x70            //added for I2C multipleser ADAFRUIT PART #5664

Adafruit_SHT4x sht4_1 = Adafruit_SHT4x();  //added for I2C multipleser ADAFRUIT PART #5664 in channel 0
Adafruit_SHT4x sht4_2 = Adafruit_SHT4x();  //added for I2C multipleser ADAFRUIT PART #5664 in channel 1

void setup()
{
  Serial.begin(9600);
  delay(10000);
  Serial.println("SHT41_multiplexer_for_POND");

  Wire.begin();

  Serial.println("HERE IN SETUP");

  // initalize sensors
  tcaselect(0);
  sht4_1.begin(0x44);
  //if (!sht4_1.begin(0x44))
  //{
  //  Serial.println("Could not find Sht4_1");
  //}

  tcaselect(1);
  sht4_2.begin(0x44);
  //if (!sht4_2.begin(0x44))
  //{
  //  Serial.println("Could not find Sht4_2");
  //}
  Serial.println("STARTING_2");
}

void loop()
{

  sensors_event_t humidity1, temp1;    //added for I2C multipleser ADAFRUIT PART #5664
  sensors_event_t humidity2, temp2;    //added for I2C multipleser ADAFRUIT PART #5664

  tcaselect(0);
  Serial.println("HERE AT SENTENCE_2");
  delay(10);
  sht4_1.getEvent(&humidity1, &temp1);// added for I2C multipleser ADAFRUIT PART #5664, populate temp and humidity objects with fresh data
  Serial.println("HERE AT SENTENCE_2-2");

  tcaselect(1);
  Serial.println("HERE AT SENTENCE_2-3");
  sht4_2.getEvent(&humidity2, &temp2);// added for I2C multipleser ADAFRUIT PART #5664, populate temp and humidity objects with fresh data

  Serial.print("temp_f1 = ");Serial.println(temp1.temperature);
  Serial.print("humidity1 = ");Serial.println(humidity1.relative_humidity);

  Serial.print("temp_f2 = ");Serial.println(temp2.temperature);
  Serial.print("humidity2 = ");Serial.println(humidity2.relative_humidity);
}

void tcaselect(uint8_t i)
{
  Serial.println("HERE AT tcaselect");
  if(i>4) return;
  Wire.beginTransmission(TCAADDR);
  Serial.println("HERE AT tcaselect #2");
  Wire.write(1<<i);
  Serial.println("HERE AT tcaselect #3");
  Wire.endTransmission();
  Serial.println("HERE AT tcaselect #4");
  //return;
}

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