You can't really expect that after 4 years of not wthdrawing your coins to the main chain they can still help you.
Why not ? they burned the Waves ? I don't think so.
It's time to be serious in crypto business. He invested his money in 2016, just 4 years, not 50 years !
Is it possible my banker say me: "you have not used you bank account for 5 years, so now, your money is ours." ?
(sorry for my very bad english)