Failed usb storage

Can anyone help me my Amazon 4k FireStick problem, after following Troy’s 33 minute video twice, I still cant move apps over, I have checked for typos with a fine tooth comb but keeps saying failed, also the USB storage is not showing on the main page, tried one last time with rdb bug, but it’s kicking me out, any ideas please. Jimmy. Thanks a lot all.

I wrote a msg about this a month or so ago…I found that all flash drives are not created equal (even from the same company)…I had bought a pack of 3 from amazon 32 gb sanddisk…none worked…I was frustrated…then I found an old 64 gb sandisk and tried it …worked perfectly…hence, if you run into this problem, get a different flash drive

Thanks for that, I will try it. Jimmy