Since I applied there, I can't judge the work at Miduca AG.

I had an interview at Miduca AG. The interview was very informative and pleasant. At the end, they told me that I could let them know. As a result, I promptly received a rejection and I was not given any specific reasons for the rejection. I don't think that's fair at all, if you're shortlisted, you're allowed to know why you failed.