Today I have a lingq count of -20 and also a negative coin total, I would think this is a bug of some sort?
Maybe you’re forgetting some words, and your Greek is worse now than it ever was before! ;o)
If you make a word Known, you earn 5X its value, in coins. That means that if you cancel edit that same word and create LingQ of it, you can have negative coins, because coins you previously earned for making a word known will be deducted.