I have quite a few students that are not able to submit a picture of their work this week. This has happened a few times over just this year (it's not happened in previous years), but this week there are at least 8 students that cannot upload a picture of their work.
They haven't changed anything to upload their work. They've been able to upload and submit their work all year up to this point. I haven't changed anything for my assignments and how they are created, available, etc.
What could be happening?