Yes, you need to be verified in order to trade. In accordance to regulations since June 2017 the previous limit to deposit $5000 USD without verification is no longer valid. All customers must be verified to trade and own gold in our platform.
Verifying yourself means all gold you hold is your property and held in your name. If something were to happen to you, like you lose your two factor Auth or access to the email address you signed up with, it can be a lot easier and time effective to prove that you own the account.
Also if you were to pass away then it could cost your estates management time and money to prove that your email belonged to you. That is why becoming verified by simply uploading a copy of your driver's licence or passport as well as a photo of a utility bill no longer than 3 months old.