I downloaded the Allplan 2018 trial version, everything was fine until the license selection popup. The Allplan trial license is activated but when I launch Allplan, the popup disappeared for like 3 seconds and come back without any error message. The only thing I can do is launch the viewer mode.
I already tried to uninstall/reinstall with a new trial license, still the same issue. Is it a known issue ? How can I fix it ?

Thanks for your answer