Wrong or not

We were back to the bird tower from the other week. Then it was full winter. Now it was warm, some blue sky but also a lot of clouds. I saw this little bug crawling around on the wall. It fits well with Tiny Tuesady, I thought, it was about 10 mm long. I came to the conclusion that it was a blue stag beetle, Platycerus caraboides, female. Correct me if I am wrong.
Extra: There is something wrong with the photo. What?
No fika! But of course we had fika, but we took it inside the bird tower when it was so windy.