Thank you for sharing us your experiences.
1, This is a known issue, we going to fix this with the coming uTool version. In the meantime you can export the content to the local drive on your computer and copy the content to the USB drive with the file explorer on the computer.
2, The LP-16 compatible with USB2 and USB3 drives. To be honest have no idea what’s going on. Did you format the drive with LP-16?
3, Sorry to hear that bad experience with the USB updater, but glad to hear finally the update was successful.
4, In the uTool if I set to small window size, I can see the beginning and the end of the song name. Which place are you talking about?