Thanks @prosa for this hint.
I don’t understand what to do in step 3 ff.
I have no programming skills. Step 2 seems to work and step 3 as well. I receive th code in the URL but I don’t understand what I need to do with it (Step 4 and 5 is a black box for me…). Where do I need to enter the code to receive the token? And what I need to do with the token? Sorry, for these basic questions.. Is somewhere a set by step guide for non tech people?