New PI expert erased all my project settings!! I'v lost all of my project.
What a disaster you did.
On Chrome version 71.0.3578.98 there are several bugs. The download pushbutton, often trigger a white page without any download.
I have downloaded the stand alone version of PI expert and there my project are still correct. It is interesting, because the web version wrote that previous version would have been overwritte, but luckily it did not.