your wallet is hacked
the exchange is hacked
a hacker steals your coins
you lose your coins on the HitBTC/Yobit exchange
...and so on.
The tokens will be returned to everyone who loses them and fills out a questionnaire. You would need to describe in detail how you lost your coins and be ready for the KYC procedure. The leftover tokens will be transferred to the community development fund, liquidity maintenance and dividend payments.