Hi,
chris.eyewire.org certificate expired on Tuesday, 23 July 2019 at 17:59:16 British Summer Time, now site is not fully functional, e.g. progress during tutorial is not updating. You could see the issue by trying to open the following link in the Chrome browser:
https://data.eyewire.org/volume/13963/segment/enumerate_metadata
Please fix ASAP
Thank you!