how can I link this acc to my steam acc ?
When you download the steam client and add an account through the client, that account will be linked to your steam account. You can request the TechSupport to unlink a Tanki account from your steam account by sending them an email at: email@example.com
I believe you can download the Tanki Client on steam, then log in using your normal password and nickname. It should save the info.
You Can't Connect it To Your Steam Account.It Connect Will a Valid Email.
Customer support service by UserEcho