Hi adi3116,
I’m using in my project an esp32 devkit v1 and also an E32-900t30d from Ebyte. I would like to test your sender and receiver codes but my question is: which pins are you using in your esp32 for Vcc, gnd, aux, txd, rxd, m0 and m1?
Another question is if the rxd and txd pins must be attached to the tx2 and rx2 respectively in the esp32.