I can't do an export because it says there is already one scheduled, what does that mean?

If you export a file that is too large to download immediately ScuolaSemplice will send the export to your Account email as soon as it is processed.

Until this first export request is processed it will not be possible to request new ones. This causes the message "A scheduled export is already scheduled, you will not be able to activate any more until it is completed".

In case you still want to proceed in requesting a new export without waiting for the old one to be processed you will be able to scroll down to the bottom of the export settings and click the red trash can icon next to the words "An export has already been scheduled, you will not be able to activate other scheduled exports until it is completed".