I was recently logged out of my account somehow and when I logged back in all of my progress was gone. Someone please help me figure out to restore it; this is four years of work. Thanks.
I"m really sorry to hear oif your situation. The only thing I can think of is to report this to Troubleshooting. I too have been using Duolingo close to 4 years, although several long streaks have been lost due to unforeseen circumstances. I empathize with you and hope you get things restored.