around the world in 80 days - signed in & game went from Day 79 back to Day 68

I signed in and I was on USA Day 79 with about 69,400 points and the game went backwards

to Day 68 with only 300+ points. What happened. I'll admit I found this great game late, but I've been playing for a couple of weeks and love it. I was on the last leg with only 1 life left and now its

gone back to day 68. What happened? Is there anyway to get back to Day 79?