My passport ultra doesn't load onto my iMac

I got a new WD passport ultra and backed up my iMac in August. Now it doesn’t load on to my iMac. How do I recover my data?
Full disc access is allowed in security , It didn’t show with OS Sonoma nor with OS Sequoia now. I rebooted the computer with every new step, still no WD: I doen’t show on disc utility. On the WD app, it says “attach a supported WD drive” which shows nothing ; Nothing else connected, excellent cable and USB slot. help!

Hi @humanone

Please refer the below article for not detecting:

Title: Resolve USB Flash and External Drive Not Detected by Windows or macOS Guided Assist
Link: Resolve USB Flash and External Drive Not Detected by Windows or macOS Guided Assist

Also, please note that Western Digital neither covers Data Recovery under its warranty policy nor has any in-house data recovery service. You may contact any data recovery company of your choice.

Title: Alternate 3rd Party Data Recovery Options link
Link: Third-Party Data Recovery Software for Windows and macOS