What technologies have been used to prepare your smart contract?
Blokchain platform is built on smart contracts using the language Solidity. So it was in the first version of the contract. I dont know if the developers stayed true to this technology or switched to another one after they had taken the hand to re-issue the token
By the way, about the token. Is there any chance that I can change TKLN to TAN?
If you haven't done it before, you probably won't be able to. But try your luck, write to the developers by mail, maybe they will solve your problem.