Had this drive for a couple of years and it worked fine on my internal usb 3 card.
I had a crash a while ago and had to wipe it and restore from a backup and ever since it will not load work on the usb 3 port - it does not show in file manager. Still works ok on usb 2 but too slow.
Just installed the latest firmware from the site and still not recognizing the drive on usb3 port.
Are you sure that the USB3 port is working? I have a similar problem and am pretty sure that the USB3 card has died. It was transfering data today at 12.6MB/sec whereas I can get 35 out of the USB2 connection.
I’m going to try connecting a USB2 drive to the USB3 card - if it won’t transfer at 35 MB/sec then the card is going to be deemed to be the problem.
Edit: My problem with the drive communication was PEBCAK, although I still have a problem with other slow lines. The question remains - did you try the same USB3 socket that you know works, or one adjacent to it?
ATM I am not going to do anything more since I cannot afford to lose access to my data while I am still working on a project. I’ll continue to use the drive on usb2.
Will let you know when I am ready again to try something new.