This isn't quite the right the right place for this but it's the closest thing at the moment so ~ The Steam release uncovered some shiny new bugs, "Stuck at level 7 (and sometimes level 9)" seems to be the biggest.
There's a thread on the Euro English (.com) forum with some suggestions, none are 100% effective for everyone, each only works for some people sometimes, but it's worth a look until BB sort things out behind the scenes: forum.thesettlersonline.com/threads/31379-level-7-quest-bug
The link for the Support Contact Form in that thread doesn't apply here, for the North American (.net) servers Zeus and Ares use: http://www.thesettlersonline.net/en/help-and-support