Some participants stored as empty CSV file

URL of experiment: Gesichter [PsychoPy]

Description of the problem:
Hi, I’ve uploaded an experiment, built with the builder. I already have a bunch of participants but most of them seem to abort their experiment and then an empty .csv file is created (although I ticked that incomplete results should be saved.)
I think many of them do the experiment on their mobile phone, are there any restrictions?

Also, I asked participants to fill in there initials but those files are saved as PARTICIPANT_name of the experiment_date.csv and are empty.

any ideas? because it is very exhausting to have found participants but their data unsaved…

Thank you so much!

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