Shortcode creator not working, even after deactivating all other plugins

Hello,
when I hit the shortcode icon (red e) in Visual view, a window pops up but is greyed out and the page stalls.
I see there are other threads on the subject but I cannot read them.
I tried deactivating all other plugins but it did not help

Do you maybe have any quotes ” ‘ or other special characters in your resource names? If so try to remove them please.
Regards

Thanks for your answer
I do not have any special character. The only ressource is called Les Bauly FR
I tried removing the spaces, but it did not help. The window stalls.
Any other suggestion?
Best Regards

Please send me admin access to support@easyreservations.org
Regards