I have 3 students beginning CSD Unit 2 Chapter 14 when their entire site erased and all green dots disappeared.
It happened last Tuesday to one, and just today to 2 students. One day they were working on it, and the next logged in and it was gone.
They do not have a Version History… it just says “start over”
Is sounds like they might have accidentally moved over to the 2017 version of the course. Have them go straight to https://studio.code.org/s/csd2-2018/ and see whether their green bubbles are back. If that doesn’t work, please submit a “bug report” and we will walk through it with you. When you submit the bug report, please ask for Elizabeth to answer it, so it will go through to me. I can’t help as much on the forum because I might have to ask for account information, which can’t be shared on a public forum.
Right after posting to the forum I reported a bug. The response I got from them was that my students did in fact switch between versions!! (I did not even realize this was possible!) I am overwhelmed with the fast response from both you and the bug report!