hello @matir
Welcome to steemit, for the Achievement 1 verification you must mention the name of the account that introduced steemit to you to make it easier for the greeter to verify
please follow the following guide : https://steemit.com/hive-172186/@cryptokannon/achievement-1-mentor-by-cryptokannon-verification-through-introduction
I wasn't introduced by anyone. As I said in my introduction, I was already a user of another Dapp social. I only stumbled upon steemit when I was researching on other Dapp socials that run on a more valued blockchain