Znuny and ((OTRS)) Community Edition

Hello, I could use a little help. I got the job to be the admin of an old otrs 3.3.4 system. 1. Thus I put myself in the group 'admin'. 2. I disabled the same group for the old admin and deactivated his account. 3. For safety I overwrote his email adress with my own. Then 4. I put my email adress in...