USB Recognition problem

Hi everybody.
I have a NAS WD PR2100. Everything’s fine but for one major detail: the nas won’t recognize any USB hard drive or stick connected either to the front or back port, UNLESS i disable the “cloud usage” in Settings/General.
The problem is, I need both functions working at the same time.
The customer service answered a couple of emails and then misteriously vanished…
Any ideas on how to solve?

Hello,

Very strange.
Try downloading the latest firmware release and updating from the downloaded file

https://support.wdc.com/knowledgebase/answer.aspx?ID=10440

Thanks for your reply
Firmware is up to date and updates automatically

Tommaso