If you invest in ETH you have to use the wallet, which is able to export your private key. DO NOT invest from exchanges.
We suggest you to use one of these wallets, as we are sure they are compatible:
Here you can find the instructions step by step, how to create each of these wallets.
Here you can find the instructions how to buy TKT tokens via these wallets.
Here you can find information on adding TKT tokens to these wallets.