I received good quality support via email:
I think the problem is that for some reason the groups were not properly applied (may be a bug in the pam module). If it is not asking too much, try to execute this directly on the database:
$ sudo -u postgres psql serverboards serverboards=# insert into auth_user_group (user_id, group_id) values (1,1); serverboards=# insert into auth_user_group (user_id, group_id) values (1,2); serverboards=# \q
This should ensure that the first user (whoever it was) is part of the
I already added the bug to our jira, and will release a bugfixed version soon.
Now welcome screen looks way better and I can manage it all!