Hi Carlos,
Reading other answers I think the problem is Free Cloud version doesn't support GitServer?. I don't have the logs and I reinstalled it just in case, finally I managed to use GitSync to tests a few cases.
On the logs there was nothing relevant, one line said git server was initialized, then everything stopped after a few lines like this this below.
'DEBUG ActivityScheduler - Run [Reload config files] 0 ms. (Runs every 2 sec)'