Sync client for Mac not working

I hava a Asustor AS5402T NAS. I am running Pydio Cells Home Edition 4.4.0 from April 3, 2024.
I have a MacBook Air and dowloaded CellsSync for Mac. The first time I did not fill in the right ip address with port so it did not work. When I tried to open the app again it did do nothing. I can not try to connect again, I don’t have a sync folder, nothing at all. I removed the app, had to kill processes otherwise I could not remove the app from my Mac. Downloaded CellsSync for Mac again, tried to open the app, did not see anything. In the activity terminal I can see the app is running, but can’t do anything with it. No sync folder nothing.
Who can help me?

hi @pete
There are some points to check: