Topping D50s over allo usbridge no native dsd

I have just got the Topping D50s dac. I am using the Allo usbridge via usb.

Volumio picked up the D50s as a playback source but when I tested it with some dsd files, volumio shows dsd correctly, but the D50s shows pcm not dsd.

Does anyone have any suggestions to get dsd playing native?

Thanks

I contacted Allo and they sent me an updated usb driver and bingo it all worked. Thanks Allo!