Salam alaikom,
For security token problems:
If you have Advanced product management open this product with it in
threadadmin_stamps template find
Code:
<input type="hidden" name="s" value="$session[sessionhash]" />
and Insert this above
Code:
<input type="hidden" name="securitytoken" value="$bbuserinfo[securitytoken]" />
If you dont have advanced product management open your templates find threadadmin_stamps and do that steps or you can download that fixed product.
Thanks for nice product and idea my brother