Arylic H50 only sees 257 songs on USB drive

Try to use an usb drive as source for music with Arylic H50 . Drive formatted in exFat or NTFS is not seen at all . Drive’s capacity is 512 Gb .
When formatted as FAT32 , only first 257 songs are seen .
Usb HDD or SSD is not seen at all .
Any ideas ?

I own a Keces Ebravo streamer. They recommend the 4Streamer app.
They claim the rear usb input is fat32 only, usb stick only, but capable of 128Gb.
Like you, I am limited to 257 files. That is, on average, less than 8Gb of storage.
I suggest that 4Stream is to blame. They claim a 1000 file limit.
Can anyone provide a solution?

It is not the 4stream software . It is the implementation of that USB storage .
I have tried Wiim desktop software which works with Arylic and it is the same problem .
People from Arylic claim that their B series streamers/amplifiers do a little better on USB storage .