I’m not sure about that, there should be two sets, each of 6 cubes and 98% should be well above the requirements of either set lol. So, I’m guessing there’s a bug (or more) in the activity tracker (thing above screen which shows cubes+accuracy) and/or in the tutorials themselves.
If at any point you want to give the lv2 tuts another go and you keep having this prob. I’d suggest emailing HQ: support@eyewire.org with a screenshot of any console errors (red in F12 in chrome windows) and/or cube Id(s) of the prob, plus a screenshot or more of the cube’s 2D+3D.
and yw