Adata flash drive 802 register

[Arthur72]

I have bought two of these, and I can't get get them to work. The computer recognises the flash drive ("Removable storage:F") but I cannot write anything to them. It tells me that the folder is not accessible.
Do they have to be registered before they work? And I cannot get to the adata-group.com site to register the product.
Any helpful comments, anyone???
Arthur

 

[DelroyMonjo]

You may have to format them first. Right click the icon and format.

 

[Arthur72]

You may have to format them first. Right click the icon and format.

I have tried that, but it makes no difference: in fact I am not sure if the format command worked either! There is no flashing light that winks on these flash drives, that I can see! Help, please,
Arthur