El Capitan, Parallels 11 and run as background service

Hello all and happy holidays!
I have downloaded and installed on a test environment the demo of parallels 11. I did input all my VMs and then i configure each one to run as background service. Later on, i restarted the host. After restart, when i try to start parallels, it shows a grey little window with a turning thingy saying starting desktop. After it runs for a minute, parallels stops and disappears. I tried removing it (using the removal app from parallels) and reinstalling it, but nothing. I tried also a clean install and repeating the experiment, same result.

Any ideas how to handle this?

Thanks.

 

Hi, please use PD removal tool to uninstall it > restart the Mac > reinstall it again and check if the issue still persisting.