Want my Raspberry Pi Pico W sending a text message #10

I am having trouble getting my Pico W to send a text message. it is easy to connect to WIFI, and my code works without errors, but get a 401 error. A asked BARD and the ClickSend helper what SMS_API_ENDPOINT to use and I have 4, but none work. Can someone share micro python Thonny script that will send a simple text )'from Bobs W' to my phone? I have the Toll Free Number in my ClickSend account.