dropbox for ReadyNAS ultra 2 not snycing.

Hi, Every one. 

I bought the Dropbox app for a few weeks ago and have struggled really hard to get it to work. 

I have a ReadyNAS Ultra 2 x86 model that is running on RAIDiator 4.2.3

i have followed all the installation instruction over and over. with no sync result. 

when i install the addon everything works just fine to connect the app to my dropbox account. and everything is working fine in addon panel. allt he dotts are green. ( I'm using a Global dropbox) 

then i go in to the share tab and i create a new Share, named "Dropbox" and boom everything i had on the dropbox just pop in ther. but when i trie to add a folder or a new file nothing will happen. doesn't matter if i put a new file on the dropbox or in the folder on the NAS. it won't sync either way. 

i have played around the permissons and changed the owner to admin and group to users and vice versa. but with no result. i have tried this like 4 times but with no results. 

my question to you. would i benefit from doing a manualy update to OS 6.0 and try the addon there or do you have new ideas on what could be wrong? 

would very appriciate a fix for this problem. i have 450 GB of work files on my NAS that i want to back up with dropbox. :(

thanks in advance