First, because of the issue "Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled)", you might want to enable nginx by default:
To see the current status, use:
chkconfig nginx
If the reply is: disabled, please continue with the next command. If the reply is enabled, all is fine.
chkconfig nginx enable
Afterwards, you read the recommendation "systemctl daemon-reload"... so please follow this suggestion with the command:
systemctl daemon-reload
I Will try it
I'm sorry, but I don't understand the issue/problem with your additional database user. Don't you want to edit the settings for the subscription/abonnement? Or is this just a complaint, that the standard policy changed? If you have issues/problems in setting another value at the subscriptions/abonnements, please let us know, WHAT you did and WHERE... and WHEN you experience issues/problems. It's really hard to guess things, if you miss to describe it.