I already used WISO 2017 and WISO 2016 for tax declaration, but I don't have them on my PC any more, so now in WISO 2018 I cannot import my data with .steuer2016 file.
Is there an alternative way? In example by importing from Elster? I've found some options, but they are very complicated and don't seem to work (https://i.imgur.com/d2bhfin.jpg)
I have accounts on buhl.de and elster.de, if that helps.