Classic Bluetooth not advertising the device

[pjowsey43]

I have been trying to use Classic bluetooth with the bluetoothserial on an ESP32-WROOM-32UE I have tried the Arduino example code but cannot get the device to advertise itself, yet I am able to get a BLE app to do so. I have tried the same bluetooth serial example code on a TTGO OLED esp32 and this does advertise itself. I appears that I must have configuration issue with my target (I have tried two different units) i am unsure how i can go about debugging this issue.

Suggestions welcome.