Whisperfish - The unofficial SailfishOS Signal client

My first try to install whisperfish, and I have been to slow. Installed the latest rpm, it started up, wanted to use as a 2nd devive, a very beautiful 2D-barcode showed up, I jumped over to get the 1st device, meanwhile SFOS put on the screenlocker, I logged in and - even after reboots - it says: Error, cant install signalclient (localized in my language). :cry: