Rush - project is empty after sync on [Win 10]

Hello,

i am using Adobe Premiere Rush in Version 1.2.12 (Build 10) on Windows 10.

I created a project with cloud sync - spend hours for cut's, speech.

Then I wanna open the project on my mobile - Samsung S9 Plus in Version 1.2.21.3203

thats works - but it dosen't show me all the videofiles. So what - I added a long video from my mobile and spend more hours for cut's. Then I wait for the sync.

So back to my Desktop - ohh ..... what happend to my project? It's empty....

Back to my mobile "Fehler Ihr Projekt konnte nicht geöffnet werden. Versuchen Sie es erneut"

OK - don't panic... I open the cloud. I recover all the deletes files in the folder Adobe\Assets\[HASH]

it did not help. I try to rename the recoverd folder with a new empty folder (other HASH) - it dit not work.

So my project is trash - there is no way so save subversions of a project.

I opened an service request - but no help for crashed projects...

I am skeptical  to give another try and waste my time. Any ideas to prevent/recover?

Title edited by mod