Jupyter Notebook +Pycharm 2025.1 + Pro licence

Hi, I am a coding beginner and no native english speaker and need help with jupyter files within pycharm.

I just downloaded Pycharm 2025.1, installed all neccesary plugins ("jupyter" & “Notebook Files”), but if I want to run a .ipynb file, I get a green tick but the run button is grey ("the file in the editor is not runnable").

I checked the interpreter Settings and the package juypyter 1.1.1 (besides client, console, jupyterlab,…) is installed.

And I also checked the File Types and *.ipynb Files are only associated with Jupyter Notebook.

besides the not runnable code, I also see no Jupyter Notebook Entry, if I want to create a new file.

jupyter kernelspec list says:
"Available kernels:
 python3    C:\Users\XXXX\PycharmProjects\didaris_swd_web\.venv\share\jupyter\kernels\python3"

Everything else works fine with pycharm.

Thanks in advance