Studio does not show my templates and current projects

Dear Community,

When I opened my Trados Studio 2022 today, it did not show me my current projects. When I wanted to create a new project, I noticed that also my templates were gone. So I created a new project but then could not work with my latest TMs and Termbases. Does anyone know how this could happen and what I can do? I restarted the program, I restarted the PC, I downloaded the latest version, but nothing helped.

Kind regards