Cosy+ Configuration error

Having issues with Cos+ reading a FAT32 USB
The USR LED keeps blinking green after we insert the USB.
When I change the format of USB/SD card to NTFS or exFAT the router reads the USB stick and goes to some red flashing pattern but never goes to solid green, after some time it will only blink green.
Based on the instruction the FAT32 is the right format but router does not appear to work with that format.

What files are on the USB stick that you are trying to apply to the Ewon?

Can you download the device’s support files from its web interface so we can check its logs for errors? You can download them under Diagnostic → Support Files.