If you get a message that you’re not yet verified, it means that you won’t be able to transfer items out of your account yet, or you can, but limited to 1 item per day. Unfortunately, there’s not a sure way to become verified, because verification is a secret score based on your activity (similar to a reputation score).
You can find out more about verification by reading this: https://lostrelics.info/faq/whats-my-reputation-or-verification-score/