My Cloud EX2 Backup Failed

I have setup 4 backup jobs to backup from NAS to USB. Two jobs keep on failing. I have recreated them and still not working. Tried to eject the USB and connect it again, same issue. There are no spaces in the Job folder names.

Please assist. The NAS is on the latest firmware.

you are in the wrong forum, the EX2 is a very different device and has iots own forum