Pop up blokked

Try disabling custom JS.

You can download and install most old versions of my calendar at any time, from the developers tab on the plugin page.

Thank you Joe!
I wonder how this could suddenly appear. After the updsate of the plugin I changed nothing.
Now I see suddenly also lines below the calendar with links to Print View, Date a.s.o.
Is that also hideable?

The custom JS used to be the standard way of enqueuing JS for the plug-in; I’ve changed it, but left people on custom JS if they had already been users. However, the changes I’ve been making to the HTML (which I couldn’t do when custom JS was standard) mean that some old JS (depending on how old) would no longer work.

Those links are not new; but yes, you can remove them. Reference the Help screen for information about shortcode attributes or use the shortcode generator, or use the drag-and-drop UI on the settings page if you want to keep a simple shortcode.

Yes!
I discouvered the STOP element just now.
It works!
Thanks for your patience!