As the software was not working properly after requesting the trial license, I had to uninstall and reinstall ORCOD LabBook Pro in order to make it work. May I still use the trial license after reinstalling?

Of course. The trial license that you requested has a validity period of 10 calendar days, during which you may test the software as many times as you desire, including reinstallations. In such cases, in the activation wizard, you can simply select again I don’t have any license key option and click on Activate in order to keep trying.