My level reverted to a year ago.
I recently completed the Spanish ladder, at level 15, and with a 54% fluency level. Today I logged on, (after duolingo didn't recognize my password, making a new password necessary). Now I'm back at 18% fluency, about a fifth of the way up the ladder, and level 7. It's as though my whole last year's work has disappeared. What should I do? I guess I could just go back to level 7 and review.