Thank you for the time you've invested in developing this fantastic module. I am a couple of years late on entering this discussion, so I was just wondering if there have been any updates which would enable the deletion of previously saved certificates from the moodledata folder?
It would be ideal if the cron could identify that 'Save certificates' is now set to OFF, and thereby delete all previously saved certificates automatically. But I would also be happy for any other kind of solution that would allow this to be done manually...
I would be grateful for any kind of advice you could provide.