To be clear, coins are not burned or something, I guess pool just did not send payout and database was purged so it now does not display anything. Your coins are on the pool wallet or being sold at exchange it is impossible to say.
Thanks for the explanation !
I wrote to the adm the pool, but he does not answer.
Really is possible to pool took the coins yourself?
Those are the possible risks with pools. You should always have low payouts to your own wallet's to prevent losses.