ReadyNAS 102 unable to sharing via Readycloud

Hi,

I'm currently using a Netgear ReadyNAS 102 which, I have previously set up to share with my brother via the Readycloud.

It appears that since I've updated my firmware on the NAS that my brother is still able to see the NAS drive but none of the folders shared on it.

I went into the readycloud admin access and basically tried to see what the problem was (with no avail) so then decided to delete the user and re-add him in the hope that it would reset any settings that were blocking access.

I re-added my brother and he has received a request to have access but when he clicks on the link to confirm to have access to my NAS drive it tries to add it but comes up with 'Token expired' and the code 3508080544?

Can anyone shed any light on why this is happening or why the sharing has suddenly stopped working?

Thanks