I didn't change website or account or anything, all I did was check the "Share your plants" thing, and then I went back to take a picture of my favorite cave blossom and everything was gone... It makes me a bit sad cause I got a bit attached to my plants (I know it's just a game but still). I don't think there's anyway to get my progress back, but if there is it would be nice... That's pretty much all I have to say