It is for web wallet, not local wallet. You can move your sigts on desktop wallet
Desktop wallet cannot sync a couple of days, show 0 connections, is there new version of desktop wallet or what i'm doing wrong???

You can create a signatum.conf file and add nodes :
https://bitcointalk.org/index.php?topic=2030529.msg21678429#msg21678429Or simply try to delete everything
EXCEPT your wallet.dat in the AppData\Roaming\signatum folder. Then start the wallet again and wait for sync and blockchain download (it may take a while)
Anyway backup your wallet.dat and keep it in a safe place (encrypted USB drive example) is a must-do also.