ReadyShare drive names keep resetting

Dear friends,

I have recently bought an RX50 router and it is working beautifully. I have a 5 HDDs dock connected to the USB port so I can access the information on those drives.

The thing is: after I change the each drive’s Share Name, after a day or so, it changes to something else. I suspect it is because the 3 of the HDDs share the same folder name, which is R:\.

Does anyone know how I can assign a different folder name? Or any other suggestions or solutions? 

Grateful for your time! Be well!