Pixelpost importer does not work

OUPS! Sorry for the delay.
Can you tell me exactly what you do to get stuck on this screen?
The importer works this way:
* first set up the pixelpost credentials and other settings by clicking on “update settings”
* then import categories by clicking on “import categories”
* then import posts & comments by clicking on “import posts”

In the meantime I found another plugin doing the job. My new wp site is up and running now -)

Snap! Where di you find this other plugin?

I used https://www.eleventwentysix.com/pp2wp/ You pay a few dollars but the script works very well!