Hello dear!
Please log in to the DEC via SSH and type the following 4 commands using the root user:
cp /home/ivs_dwu/config/config.xml /config/ivs_dwu/config/
chown dwu:dec /config/ivs_dwu/config/config.xml
/share/init.d/root_add_for_business.sh
/home/ivstool/bin/service.sh restart dwu.