USB device mounted and visible but wont open

Hello I am a 3 year qubes user and first time poster recently upgraded to 4.2 with a clean install on purisim mini. I have a backup from my old qubes os before upgrade, on a usb formatted for modern systems, I have a backup file and some other files that I could access on the usb on the old qubes os…since upgrading to 4.2 I cannot open the USB after mounting,

I have mounted it in numerous qubes, services and templates, There is nothing specifically related to my problem in the documentation…I have successfully added the u2f-proxy service and enabled it in all templates qubes, and the usb “service”, I have allowed all qubes to register new keys and one qube access to all keys.

I can see the USB in the file manager under other locations but does nothing, appears as “unknown/zero bytes” and I can’t open it…I know I’m missing something here I just can’t figure out what i’m doing wrong.